CA2711915A1 - Latex binders, aqueous coatings and paints having freeze-thaw stability and methods for using same - Google Patents
Latex binders, aqueous coatings and paints having freeze-thaw stability and methods for using same Download PDFInfo
- Publication number
- CA2711915A1 CA2711915A1 CA2711915A CA2711915A CA2711915A1 CA 2711915 A1 CA2711915 A1 CA 2711915A1 CA 2711915 A CA2711915 A CA 2711915A CA 2711915 A CA2711915 A CA 2711915A CA 2711915 A1 CA2711915 A1 CA 2711915A1
- Authority
- CA
- Canada
- Prior art keywords
- polymer
- latex
- coating composition
- particle size
- freeze
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000004816 latex Substances 0.000 title claims abstract description 335
- 229920000126 latex Polymers 0.000 title claims abstract description 334
- 238000000034 method Methods 0.000 title claims description 44
- 239000003973 paint Substances 0.000 title description 98
- 239000011230 binding agent Substances 0.000 title description 43
- 238000000576 coating method Methods 0.000 title description 20
- 229920000642 polymer Polymers 0.000 claims abstract description 302
- 239000000178 monomer Substances 0.000 claims abstract description 181
- 239000008199 coating composition Substances 0.000 claims abstract description 159
- 239000000654 additive Substances 0.000 claims abstract description 104
- 230000000996 additive effect Effects 0.000 claims abstract description 81
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 58
- 239000000049 pigment Substances 0.000 claims abstract description 26
- 239000002245 particle Substances 0.000 claims description 205
- 239000000203 mixture Substances 0.000 claims description 60
- -1 acrylamido, methacrylamido Chemical group 0.000 claims description 52
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 31
- 230000009477 glass transition Effects 0.000 claims description 25
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims description 22
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 22
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 claims description 20
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 claims description 14
- 229910019142 PO4 Inorganic materials 0.000 claims description 14
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 13
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 12
- 239000010452 phosphate Substances 0.000 claims description 12
- 125000001453 quaternary ammonium group Chemical group 0.000 claims description 12
- LVHBHZANLOWSRM-UHFFFAOYSA-N itaconic acid Chemical compound OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 claims description 11
- 239000000126 substance Substances 0.000 claims description 11
- 125000004169 (C1-C6) alkyl group Chemical group 0.000 claims description 10
- 125000004432 carbon atom Chemical group C* 0.000 claims description 10
- 150000007942 carboxylates Chemical class 0.000 claims description 10
- 150000001768 cations Chemical class 0.000 claims description 10
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 claims description 10
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 claims description 10
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 10
- UEZVMMHDMIWARA-UHFFFAOYSA-M phosphonate Chemical compound [O-]P(=O)=O UEZVMMHDMIWARA-UHFFFAOYSA-M 0.000 claims description 10
- 125000003011 styrenyl group Chemical group [H]\C(*)=C(/[H])C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 claims description 10
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 10
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 claims description 10
- 125000004178 (C1-C4) alkyl group Chemical group 0.000 claims description 9
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 9
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 9
- 239000004215 Carbon black (E152) Substances 0.000 claims description 8
- 229930195733 hydrocarbon Natural products 0.000 claims description 8
- 125000002768 hydroxyalkyl group Chemical group 0.000 claims description 8
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 claims description 8
- 229920002554 vinyl polymer Polymers 0.000 claims description 8
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 claims description 7
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims description 7
- NIXOWILDQLNWCW-UHFFFAOYSA-M acrylate group Chemical group C(C=C)(=O)[O-] NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 7
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical group C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 6
- 239000005977 Ethylene Chemical group 0.000 claims description 6
- 229920001567 vinyl ester resin Polymers 0.000 claims description 6
- QFXBYZKQOKCTQA-UHFFFAOYSA-N (carbamoylamino) 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)ONC(N)=O QFXBYZKQOKCTQA-UHFFFAOYSA-N 0.000 claims description 5
- JAHNSTQSQJOJLO-UHFFFAOYSA-N 2-(3-fluorophenyl)-1h-imidazole Chemical group FC1=CC=CC(C=2NC=CN=2)=C1 JAHNSTQSQJOJLO-UHFFFAOYSA-N 0.000 claims description 5
- ATVJXMYDOSMEPO-UHFFFAOYSA-N 3-prop-2-enoxyprop-1-ene Chemical compound C=CCOCC=C ATVJXMYDOSMEPO-UHFFFAOYSA-N 0.000 claims description 5
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims description 5
- QYKIQEUNHZKYBP-UHFFFAOYSA-N Vinyl ether Chemical compound C=COC=C QYKIQEUNHZKYBP-UHFFFAOYSA-N 0.000 claims description 5
- 125000005396 acrylic acid ester group Chemical group 0.000 claims description 5
- 125000005397 methacrylic acid ester group Chemical group 0.000 claims description 5
- 125000000325 methylidene group Chemical group [H]C([H])=* 0.000 claims description 5
- GYCMBHHDWRMZGG-UHFFFAOYSA-N Methylacrylonitrile Chemical compound CC(=C)C#N GYCMBHHDWRMZGG-UHFFFAOYSA-N 0.000 claims description 4
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Chemical group OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims description 4
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 claims description 4
- LDHQCZJRKDOVOX-NSCUHMNNSA-N crotonic acid Chemical group C\C=C\C(O)=O LDHQCZJRKDOVOX-NSCUHMNNSA-N 0.000 claims description 4
- 150000001993 dienes Chemical class 0.000 claims description 4
- 239000001530 fumaric acid Chemical group 0.000 claims description 4
- 239000011976 maleic acid Chemical group 0.000 claims description 4
- 150000002763 monocarboxylic acids Chemical group 0.000 claims description 4
- LDHQCZJRKDOVOX-UHFFFAOYSA-N trans-crotonic acid Chemical group CC=CC(O)=O LDHQCZJRKDOVOX-UHFFFAOYSA-N 0.000 claims description 4
- XYLMUPLGERFSHI-UHFFFAOYSA-N alpha-Methylstyrene Chemical compound CC(=C)C1=CC=CC=C1 XYLMUPLGERFSHI-UHFFFAOYSA-N 0.000 claims description 3
- 125000004209 (C1-C8) alkyl group Chemical group 0.000 claims description 2
- 229910006067 SO3−M Inorganic materials 0.000 claims 4
- 150000001875 compounds Chemical class 0.000 abstract description 40
- QQGRFMIMXPWKPM-UHFFFAOYSA-N 2,3,4-tributylphenol Chemical compound CCCCC1=CC=C(O)C(CCCC)=C1CCCC QQGRFMIMXPWKPM-UHFFFAOYSA-N 0.000 abstract description 21
- TVFWYUWNQVRQRG-UHFFFAOYSA-N 2,3,4-tris(2-phenylethenyl)phenol Chemical compound C=1C=CC=CC=1C=CC1=C(C=CC=2C=CC=CC=2)C(O)=CC=C1C=CC1=CC=CC=C1 TVFWYUWNQVRQRG-UHFFFAOYSA-N 0.000 abstract description 21
- 230000015572 biosynthetic process Effects 0.000 abstract description 8
- 239000006260 foam Substances 0.000 abstract description 4
- 230000035945 sensitivity Effects 0.000 abstract description 3
- 239000004094 surface-active agent Substances 0.000 description 48
- 239000012855 volatile organic compound Substances 0.000 description 46
- 239000003999 initiator Substances 0.000 description 32
- 239000000839 emulsion Substances 0.000 description 31
- 238000009472 formulation Methods 0.000 description 29
- 239000003995 emulsifying agent Substances 0.000 description 26
- 239000006185 dispersion Substances 0.000 description 25
- 238000007720 emulsion polymerization reaction Methods 0.000 description 20
- 235000019333 sodium laurylsulphate Nutrition 0.000 description 20
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 19
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 18
- 239000008367 deionised water Substances 0.000 description 18
- 229910021641 deionized water Inorganic materials 0.000 description 18
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 16
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 description 16
- 239000007798 antifreeze agent Substances 0.000 description 15
- 239000007787 solid Substances 0.000 description 13
- 239000004615 ingredient Substances 0.000 description 11
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical group C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 10
- 238000007792 addition Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 10
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 10
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 9
- 229910001870 ammonium persulfate Inorganic materials 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 8
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 8
- 235000017557 sodium bicarbonate Nutrition 0.000 description 8
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 8
- 229920001909 styrene-acrylic polymer Polymers 0.000 description 8
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 125000000129 anionic group Chemical group 0.000 description 6
- 125000003118 aryl group Chemical group 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 6
- 229920001577 copolymer Polymers 0.000 description 6
- 239000002736 nonionic surfactant Substances 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 5
- 125000000217 alkyl group Chemical group 0.000 description 5
- 239000003139 biocide Substances 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 5
- 239000004815 dispersion polymer Substances 0.000 description 5
- 150000003254 radicals Chemical class 0.000 description 5
- 229910052938 sodium sulfate Inorganic materials 0.000 description 5
- 235000011152 sodium sulphate Nutrition 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 4
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 4
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 4
- 150000008051 alkyl sulfates Chemical class 0.000 description 4
- 125000002947 alkylene group Chemical group 0.000 description 4
- CBTVGIZVANVGBH-UHFFFAOYSA-N aminomethyl propanol Chemical compound CC(C)(N)CO CBTVGIZVANVGBH-UHFFFAOYSA-N 0.000 description 4
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 description 4
- 239000003086 colorant Substances 0.000 description 4
- 238000007710 freezing Methods 0.000 description 4
- 230000008014 freezing Effects 0.000 description 4
- 238000011068 loading method Methods 0.000 description 4
- 238000006116 polymerization reaction Methods 0.000 description 4
- 229920006395 saturated elastomer Polymers 0.000 description 4
- 238000013341 scale-up Methods 0.000 description 4
- DAFHKNAQFPVRKR-UHFFFAOYSA-N (3-hydroxy-2,2,4-trimethylpentyl) 2-methylpropanoate Chemical compound CC(C)C(O)C(C)(C)COC(=O)C(C)C DAFHKNAQFPVRKR-UHFFFAOYSA-N 0.000 description 3
- 241000726103 Atta Species 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 3
- 239000003153 chemical reaction reagent Substances 0.000 description 3
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 125000000753 cycloalkyl group Chemical group 0.000 description 3
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 3
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 3
- 239000002270 dispersing agent Substances 0.000 description 3
- 238000002296 dynamic light scattering Methods 0.000 description 3
- 230000001804 emulsifying effect Effects 0.000 description 3
- 125000000524 functional group Chemical group 0.000 description 3
- 125000001165 hydrophobic group Chemical group 0.000 description 3
- 239000007800 oxidant agent Substances 0.000 description 3
- 230000001590 oxidative effect Effects 0.000 description 3
- 239000000123 paper Substances 0.000 description 3
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010926 purge Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 229930195734 saturated hydrocarbon Natural products 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 239000004408 titanium dioxide Substances 0.000 description 3
- 125000003161 (C1-C6) alkylene group Chemical group 0.000 description 2
- ARXJGSRGQADJSQ-UHFFFAOYSA-N 1-methoxypropan-2-ol Chemical compound COCC(C)O ARXJGSRGQADJSQ-UHFFFAOYSA-N 0.000 description 2
- GOXQRTZXKQZDDN-UHFFFAOYSA-N 2-Ethylhexyl acrylate Chemical compound CCCCC(CC)COC(=O)C=C GOXQRTZXKQZDDN-UHFFFAOYSA-N 0.000 description 2
- 241000219198 Brassica Species 0.000 description 2
- 235000003351 Brassica cretica Nutrition 0.000 description 2
- 235000003343 Brassica rupestris Nutrition 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 229920006397 acrylic thermoplastic Polymers 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 125000003342 alkenyl group Chemical group 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000002280 amphoteric surfactant Substances 0.000 description 2
- 239000003945 anionic surfactant Substances 0.000 description 2
- 239000012736 aqueous medium Substances 0.000 description 2
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000003115 biocidal effect Effects 0.000 description 2
- QKSKPIVNLNLAAV-UHFFFAOYSA-N bis(2-chloroethyl) sulfide Chemical compound ClCCSCCCl QKSKPIVNLNLAAV-UHFFFAOYSA-N 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 235000010216 calcium carbonate Nutrition 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000011203 carbon fibre reinforced carbon Substances 0.000 description 2
- 238000012512 characterization method Methods 0.000 description 2
- YACLQRRMGMJLJV-UHFFFAOYSA-N chloroprene Chemical compound ClC(=C)C=C YACLQRRMGMJLJV-UHFFFAOYSA-N 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 238000004581 coalescence Methods 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000001687 destabilization Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000003550 marker Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 235000010460 mustard Nutrition 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 150000002978 peroxides Chemical class 0.000 description 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 2
- 239000004014 plasticizer Substances 0.000 description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 2
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- 239000000376 reactant Substances 0.000 description 2
- 239000011541 reaction mixture Substances 0.000 description 2
- 239000006254 rheological additive Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- YNJORDSKPXMABC-UHFFFAOYSA-M sodium;2-hydroxypropane-2-sulfonate Chemical compound [Na+].CC(C)(O)S([O-])(=O)=O YNJORDSKPXMABC-UHFFFAOYSA-M 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 2
- CIHOLLKRGTVIJN-UHFFFAOYSA-N tert‐butyl hydroperoxide Chemical compound CC(C)(C)OO CIHOLLKRGTVIJN-UHFFFAOYSA-N 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000010257 thawing Methods 0.000 description 2
- 239000002562 thickening agent Substances 0.000 description 2
- 239000001993 wax Substances 0.000 description 2
- 125000006558 (C6-C8) cycloalkyl group Chemical group 0.000 description 1
- OHVLMTFVQDZYHP-UHFFFAOYSA-N 1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-2-[4-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]piperazin-1-yl]ethanone Chemical compound N1N=NC=2CN(CCC=21)C(CN1CCN(CC1)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)=O OHVLMTFVQDZYHP-UHFFFAOYSA-N 0.000 description 1
- HMUNWXXNJPVALC-UHFFFAOYSA-N 1-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperazin-1-yl]-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)N1CCN(CC1)C(CN1CC2=C(CC1)NN=N2)=O HMUNWXXNJPVALC-UHFFFAOYSA-N 0.000 description 1
- NFGXHKASABOEEW-UHFFFAOYSA-N 1-methylethyl 11-methoxy-3,7,11-trimethyl-2,4-dodecadienoate Chemical compound COC(C)(C)CCCC(C)CC=CC(C)=CC(=O)OC(C)C NFGXHKASABOEEW-UHFFFAOYSA-N 0.000 description 1
- 125000006017 1-propenyl group Chemical group 0.000 description 1
- OVSKIKFHRZPJSS-UHFFFAOYSA-N 2,4-D Chemical compound OC(=O)COC1=CC=C(Cl)C=C1Cl OVSKIKFHRZPJSS-UHFFFAOYSA-N 0.000 description 1
- VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 1
- LDXJRKWFNNFDSA-UHFFFAOYSA-N 2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-1-[4-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]piperazin-1-yl]ethanone Chemical compound C1CN(CC2=NNN=C21)CC(=O)N3CCN(CC3)C4=CN=C(N=C4)NCC5=CC(=CC=C5)OC(F)(F)F LDXJRKWFNNFDSA-UHFFFAOYSA-N 0.000 description 1
- WZFUQSJFWNHZHM-UHFFFAOYSA-N 2-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperazin-1-yl]-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)N1CCN(CC1)CC(=O)N1CC2=C(CC1)NN=N2 WZFUQSJFWNHZHM-UHFFFAOYSA-N 0.000 description 1
- IHCCLXNEEPMSIO-UHFFFAOYSA-N 2-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperidin-1-yl]-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C1CCN(CC1)CC(=O)N1CC2=C(CC1)NN=N2 IHCCLXNEEPMSIO-UHFFFAOYSA-N 0.000 description 1
- 229940058020 2-amino-2-methyl-1-propanol Drugs 0.000 description 1
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- GAWIXWVDTYZWAW-UHFFFAOYSA-N C[CH]O Chemical group C[CH]O GAWIXWVDTYZWAW-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004908 Emulsion polymer Substances 0.000 description 1
- 239000004606 Fillers/Extenders Substances 0.000 description 1
- 238000012424 Freeze-thaw process Methods 0.000 description 1
- 238000012425 Freezing-thawing process Methods 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 1
- 125000002015 acyclic group Chemical group 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 229920000180 alkyd Polymers 0.000 description 1
- 239000000908 ammonium hydroxide Substances 0.000 description 1
- 230000002528 anti-freeze Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 125000003710 aryl alkyl group Chemical group 0.000 description 1
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 125000000068 chlorophenyl group Chemical group 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 125000000640 cyclooctyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C([H])([H])C1([H])[H] 0.000 description 1
- 125000001511 cyclopentyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 125000003827 glycol group Chemical group 0.000 description 1
- 150000002334 glycols Chemical class 0.000 description 1
- 125000001188 haloalkyl group Chemical group 0.000 description 1
- 125000001475 halogen functional group Chemical group 0.000 description 1
- 125000004356 hydroxy functional group Chemical group O* 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 125000004029 hydroxymethyl group Chemical group [H]OC([H])([H])* 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 125000005647 linker group Chemical group 0.000 description 1
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- 239000000391 magnesium silicate Substances 0.000 description 1
- 229910052919 magnesium silicate Inorganic materials 0.000 description 1
- 235000019792 magnesium silicate Nutrition 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- MYWUZJCMWCOHBA-VIFPVBQESA-N methamphetamine Chemical compound CN[C@@H](C)CC1=CC=CC=C1 MYWUZJCMWCOHBA-VIFPVBQESA-N 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- NJTGANWAUPEOAX-UHFFFAOYSA-N molport-023-220-454 Chemical compound OCC(O)CO.OCC(O)CO NJTGANWAUPEOAX-UHFFFAOYSA-N 0.000 description 1
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000001280 n-hexyl group Chemical group C(CCCCC)* 0.000 description 1
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 125000000962 organic group Chemical group 0.000 description 1
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 1
- 239000002304 perfume Substances 0.000 description 1
- 125000000286 phenylethyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])C([H])([H])* 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000002798 polar solvent Substances 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- CHWRSCGUEQEHOH-UHFFFAOYSA-N potassium oxide Chemical compound [O-2].[K+].[K+] CHWRSCGUEQEHOH-UHFFFAOYSA-N 0.000 description 1
- 229910001950 potassium oxide Inorganic materials 0.000 description 1
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 239000012966 redox initiator Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- 229910001948 sodium oxide Inorganic materials 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000007655 standard test method Methods 0.000 description 1
- 230000003335 steric effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 125000005504 styryl group Chemical group 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- ISXSCDLOGDJUNJ-UHFFFAOYSA-N tert-butyl prop-2-enoate Chemical compound CC(C)(C)OC(=O)C=C ISXSCDLOGDJUNJ-UHFFFAOYSA-N 0.000 description 1
- 125000003944 tolyl group Chemical group 0.000 description 1
- 125000002221 trityl group Chemical group [H]C1=C([H])C([H])=C([H])C([H])=C1C([*])(C1=C(C(=C(C(=C1[H])[H])[H])[H])[H])C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 description 1
- 229930195735 unsaturated hydrocarbon Natural products 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
- HSYFJDYGOJKZCL-UHFFFAOYSA-L zinc;sulfite Chemical compound [Zn+2].[O-]S([O-])=O HSYFJDYGOJKZCL-UHFFFAOYSA-L 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/02—Homopolymers or copolymers of acids; Metal or ammonium salts thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/12—Polymerisation in non-solvents
- C08F2/16—Aqueous medium
- C08F2/22—Emulsion polymerisation
- C08F2/24—Emulsion polymerisation with the aid of emulsifying agents
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
- C09D133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C09D133/08—Homopolymers or copolymers of acrylic acid esters
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Paints Or Removers (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Polymerisation Methods In General (AREA)
Abstract
Disclosed are latex polymers and an aqueous coating compositions having excellent freeze-thaw stability, open time, stain resistance, low temperature film formation, foam resistance, block resistance, adhesion, water sensitivity and a low-VOC
con-tent. The latex polymers and aqueous coating compositions include at least one latex polymer derived from at least one monomer copolymerized or blended with an alkoxylated compound, for example an alkoxylated tristyrylphenol or an alkoxylated tributylphe-nol. Also provided is an aqueous coating composition including at least one latex polymer, at least one pigment, water and at least one freeze-thaw additive. Typically, the freeze-thaw additive in an amount greater than about 1.3% by weight of the polymer, typically in an amount greater than about 2% by weight of the polymer, in an amount greater than about 4% by weight of the polymer, in an amount greater than about 7.5% by weight of the polymer, in an amount greater than about 10% by weight of the polymer or in an amount greater than about 20% by weight of the polymer.
con-tent. The latex polymers and aqueous coating compositions include at least one latex polymer derived from at least one monomer copolymerized or blended with an alkoxylated compound, for example an alkoxylated tristyrylphenol or an alkoxylated tributylphe-nol. Also provided is an aqueous coating composition including at least one latex polymer, at least one pigment, water and at least one freeze-thaw additive. Typically, the freeze-thaw additive in an amount greater than about 1.3% by weight of the polymer, typically in an amount greater than about 2% by weight of the polymer, in an amount greater than about 4% by weight of the polymer, in an amount greater than about 7.5% by weight of the polymer, in an amount greater than about 10% by weight of the polymer or in an amount greater than about 20% by weight of the polymer.
Description
2 PCT/US2009/000309 LATEX BINDERS, AQUEOUS COATINGS AND PAINTS HAVING FREEZE-THAW STABILITY AND METHODS FOR USING SAME
CROSS REFERENCE TO RELATED APPLICATIONS
[001] This application claims the benefit of U.S. Provisional Application Serial No. 61/022,206, filed January 18, 2008, U.S. Provisional Application Serial No.
61/022,443, filed January 21, 2008 and U.S. Provisional Application Serial No.
61/199,936, filed November 21, 2008, all herein incorporated by reference FIELD OF THE INVENTION
[002] The present invention relates to the use of a particular family of alkoxylated compounds, e.g alkoxylated tristyryiphenol and alkoxylated tributylphenol, for improving freeze-thaw stability and open time of aqueous coating compositions such as paint and paper coating compositions. In particular, the present invention relates to the use of certain reactive alkoxylated compound based monomers, surface active alkoxylated compound surfactants, and surface active alkoxylated compound additives for freeze-thaw stability of aqueous latex dispersions, aqueous latex binders and aqueous latex paints.
BACKGROUND OF THE INVENTION
CROSS REFERENCE TO RELATED APPLICATIONS
[001] This application claims the benefit of U.S. Provisional Application Serial No. 61/022,206, filed January 18, 2008, U.S. Provisional Application Serial No.
61/022,443, filed January 21, 2008 and U.S. Provisional Application Serial No.
61/199,936, filed November 21, 2008, all herein incorporated by reference FIELD OF THE INVENTION
[002] The present invention relates to the use of a particular family of alkoxylated compounds, e.g alkoxylated tristyryiphenol and alkoxylated tributylphenol, for improving freeze-thaw stability and open time of aqueous coating compositions such as paint and paper coating compositions. In particular, the present invention relates to the use of certain reactive alkoxylated compound based monomers, surface active alkoxylated compound surfactants, and surface active alkoxylated compound additives for freeze-thaw stability of aqueous latex dispersions, aqueous latex binders and aqueous latex paints.
BACKGROUND OF THE INVENTION
[003] Latex paints are used for a variety of applications including interior and exterior, and flat, semi-gloss and gloss applications. However, paints and aqueous latex dispersions, particularly low VOC paints and latex dispersions, suffer from a lack of freeze-thaw stability. This is particularly a problem during transportation and storage.
[004] Latex freeze-thaw (sometimes herein referred to as "F/T") stability, including the freezing-thawing process, destabilization mechanism, and polymer structures, have been extensively studied since 1950. Blackley, D.C., Polymer Lattices-Science and Technology, 2"d Ed., Vol. 1, Chapman & Hall, 1997, gives a comprehensive review of colloidal destabilization of latexes by freezing. The freezing process starts with the decrease of temperature which leads to the formation of ice crystals. The ice crystal structures progressively increase the latex particle concentration in the unfrozen water. Eventually latex particles are forced into contact with each other at the pressure of growing ice crystal structures, resulting in particle aggregation or interparticle coalescence. To make a stable latex dispersion in aqueous medium or latex paints with freeze-thaw stability, various approaches have been employed. The addition of antifreeze agents, e.g. glycol derivatives, has been applied to latex paint to achieve freeze-thaw stability. Thus, latex paints include anti-freeze agents to allow the paints to be used even after they have been subjected to freezing conditions. Exemplary anti-freeze agents include ethylene glycol, diethylene glcol and propylene glycol.
[005] See, Bosen, S.F., Bowles, W.A., Ford, E.A., and Person, B.D., "Antifreezes," Ullmann's Encyclopedia of Industrial Chemistry, 5th Ed., Vol.
A3, VCH Verlag, pages 23-32, 1985. However, a low or no VOC requirement means the glycol level that can be used has to be reduced or eliminated. Aslamazova, T.
R., Colloid Journal, Vol. 61, No. 3, 1999, pp. 268-273, studied the freeze resistance of acrylate latexes and revealed the role of electrostatic contribution to the potential energy of latex particle interactions. Using electrostatic effects on colloidal surface, the interactions of Coulombic repulsion between the charged latex particles lead to higher potential energy. The electrical effects stabilize the latex particles in the freezing and thawing process.
A3, VCH Verlag, pages 23-32, 1985. However, a low or no VOC requirement means the glycol level that can be used has to be reduced or eliminated. Aslamazova, T.
R., Colloid Journal, Vol. 61, No. 3, 1999, pp. 268-273, studied the freeze resistance of acrylate latexes and revealed the role of electrostatic contribution to the potential energy of latex particle interactions. Using electrostatic effects on colloidal surface, the interactions of Coulombic repulsion between the charged latex particles lead to higher potential energy. The electrical effects stabilize the latex particles in the freezing and thawing process.
[006] Rajeev Farwaha et. al. (U.S. Patent: no. 5,399,617) discloses the copolymerizable amphoteric surfactants and discloses latex copolymers comprising the copolymerizable amphoteric surfactants impart freeze-thaw stability to the latex paints.
[007] Cheng-Le Zhao et. al. (U.S. Patent no. 6,933,415 B2) discloses latex polymers including polymerizable alkoxylated surfactants and discloses the low VOC aqueous coatings have excellent freeze-thaw stability.
[008] Rajeev Farwaha et. al. (U.S. Patent no. 5,610,225) discloses incorporating a monomer with long polyethylene glycol structures to achieve stable freeze-thaw latex.
[009] Masayoshi Okubo et. al. (U.S. Patent: no. 6,410,655 B2) discloses freeze-thaw stability of latex polymers including ethylenic unsaturated monomers.
[0010] The additives used as anti-freeze agents are effective for their purposes but are becoming more and more undesirable because they are volatile organic compounds (VOC's). After application of the latex paint to a substrate, the VOC's slowly evaporate into the surroundings.
[0011] With strict environmental legislation requiring the reduction of the amount of Volatile Organic Compounds (VOC) in coatings, it is desirable to have paint formulations without or with substantially reduced VOC content, which would include coalescing agents and freeze-thaw agents, among others. Latex binder manufactures are thus forced to develop low VOC binders to meet the requirements of paints and coatings industry. However, low VOC coatings and paints must meet or exceed coating performance standards set in the industry.
[0012] In traditional latex binders for architectural coatings, the glass transition temperature is between above 10 C to about 40 C. However, such architectural coatings often need and contain coalescent agents to soften such latex binders (i.e., soften the latex binders having relatively Tg in the range of above 10 C to about 40 C) or anti-freeze agents; both of which are typically high VOC
solvents.
Thus, these traditional architectural coatings with higher Tg latex binders cannot be formulated to be low VOC without solvents.
solvents.
Thus, these traditional architectural coatings with higher Tg latex binders cannot be formulated to be low VOC without solvents.
[0013] For the low VOC application (i.e., low Tg) binders, the average Tg is close to or below 0 C. However, the latex binder with low Tg causes grit when subjected to freeze/thaw cycles as well as exposure to mechanical shear. The resulting coating films are softer and tackier, even after fully dried, and are susceptible to blocking and dirt pick-up effects. Also, such low Tg latex binders and resulting latex paints are not stable, and gel in a cold environmental storage or transportation process. Freeze-Thaw stability of low Tg latex binders and low VOC paints is critically important for transportation, storage, and practical applications. Thus, there is a need to develop latex paints and latex particle dispersions using emulsion polymer technology which meet zero or low VOC
requirement and at the same provide excellent mechanical and film performance without sacrificing the freeze-thaw stability of those paints.
SUMMARY OF THE INVENTION
requirement and at the same provide excellent mechanical and film performance without sacrificing the freeze-thaw stability of those paints.
SUMMARY OF THE INVENTION
[0014] The present invention relates to the use of a particular family of alkoxylated compounds with bulky hydrophobic groups, e.g., alkoxylated tristyrylphenols or alkoxylated tributylphenols, for improving freeze-thaw stability, as well as other properties such as open time, low temperature film formation, stain resistance, film gloss, dispersibility, hiding and scrub resistance, foam resistance, block resistance, adhesion and water sensitivity, among others, of latex binders, paints and coatings. During the thawing process of the freeze-thaw process in latex dispersions and paint formulation, it is believed that the latex particles with high Tg are easy to recover, while the particles with relatively low Tg can not recover from the aggregation or coalescence states which gel.
[0015] While not being bound to theory, it is theorized the present invention in part stabilizes the latex particles using steric effects of larger hydrophobic groups to form a protective layer on the surfaces of soft latex particles. The large hydrophobic groups adsorbed or grafted onto the latex particles or co-polymerized into the latex particles prevent these latex particles from approaching the surfaces of other soft latex particles and increase the distance of separation between soft latex particles. The alkylene, e.g., ethylene oxide units from the surfactant of the alkoxylated compounds chains also form a layer which interacts with aqueous medium.
[0016] In accordance with the invention, aqueous coating compositions (e.g.
latex paints, latex dispersion) including an alkoxylated compound can be produced having excellent freeze-thaw stabilities with the addition of little or no other anti-freeze agents such as glycol, coalescents and high VOC components, more typically with no anti-freeze agents. Freeze-thaw stability or being freeze-thaw stable generally is understood to mean that the composition/formulation does not gel in 3 or more F/T cycles, typically 5 or more F/T cycles.
latex paints, latex dispersion) including an alkoxylated compound can be produced having excellent freeze-thaw stabilities with the addition of little or no other anti-freeze agents such as glycol, coalescents and high VOC components, more typically with no anti-freeze agents. Freeze-thaw stability or being freeze-thaw stable generally is understood to mean that the composition/formulation does not gel in 3 or more F/T cycles, typically 5 or more F/T cycles.
[0017] The alkoxylated compounds can be employed in a number of ways for improving freeze-thaw stability of latex binders, paints and coatings. The present invention may employ polymerizable reactive alkoxylated monomers as a reactant during emulsion polymerization to form the latex polymer. The present invention may employ one or more surface active alkoxylated compounds described herein as a surfactant (emulsifier) during emulsion polymerization to form the latex polymer. The present invention may employ a surface active alkoxylated compound as an additive to a latex polymer-containing aqueous dispersion or concentrate.
[0018] In one aspect, the present invention is a latex polymer derived from at least one first monomer and at least one polymerizable reactive alkoxylated second monomer having the structural formula IA:
( OX -)n R
Ri Rs
( OX -)n R
Ri Rs
[0019] wherein R1, R2 and R3 are independently selected from:
-H, tert-butyl, butyl, isobutyl, -CH2 CHz , - CH or - CH ,
-H, tert-butyl, butyl, isobutyl, -CH2 CHz , - CH or - CH ,
[0020] wherein X is a divalent hydrocarbon radical selected from linear or branched alkylene radicals having from 2 to 8 carbon atoms; wherein n is an integer of from 1 to 100, wherein R comprises an ethylenically unsaturated group.
In one embodiment, R can be acrylate, C1-C6 alkyl acrylate, allyl, vinyl, maleate, itaconate or fumarate. R can also be selected from acrylo, methacrylo, acrylamido, methacrylamido, diallylamino, allyl ether, vinyl ether, a-alkenyl, maleimido, styrenyl, and/or a-alkyl styrenyl groups.
In one embodiment, R can be acrylate, C1-C6 alkyl acrylate, allyl, vinyl, maleate, itaconate or fumarate. R can also be selected from acrylo, methacrylo, acrylamido, methacrylamido, diallylamino, allyl ether, vinyl ether, a-alkenyl, maleimido, styrenyl, and/or a-alkyl styrenyl groups.
[0021] In another embodiment, R has a chemical structure: RaCH=C(Rb)COO-, wherein if Ra is H, then Rb is H, C1-C4 alkyl, or -CH2COOX; if Ra is -C(O)OX, then Rb is H or -CH2C(O)OXa; or if Ra is CH3, then Rb is H and Xa is H or C1-C4 alkyl.
R can, in another embodiment, have chemical structure: -HC=CYZ or -OCH=CYZ, wherein Y is H, CH3, or CI ; Z is CN, Cl, - COORc, -C6H4Rc, -COORd, or -HC=CH2; Rd is C1 -C8 alkyl or C2-C8 hydroxy alkyl; Rc is H, Cl, Br, or C1-alkyl.
R can, in another embodiment, have chemical structure: -HC=CYZ or -OCH=CYZ, wherein Y is H, CH3, or CI ; Z is CN, Cl, - COORc, -C6H4Rc, -COORd, or -HC=CH2; Rd is C1 -C8 alkyl or C2-C8 hydroxy alkyl; Rc is H, Cl, Br, or C1-alkyl.
[0022] In another aspect, the present invention is a latex polymer derived from at least one first monomer and at least one second monomer having the structural formula IB:
O
IB
O
IB
[0023] wherein n is an integer of from about 1 to about 100, and R4 is selected from H and C1-C6 alkyl. In one embodiment, n is an integer of from about 3 to about 80, typically, about 10 to about 60, and more typically from about 20 to about 50. The at least one first monomer can, in one embodiment, comprise at least one acrylic monomer selected from the group consisting of acrylic acid, acrylic acid esters, methacrylic acid, and methacrylic acid esters. In another embodiment, the latex polymer can be derived from one or more monomers selected from styrene, alpha-methyl styrene, vinyl chloride, acrylonitrile, methacrylonitrile, ureido methacrylate, vinyl acetate, vinyl esters of branched tertiary monocarboxylic acids, itaconic acid, crotonic acid, maleic acid, fumaric acid, ethylene, or C4-C8 conjugated dienes.
[0024] In another embodiment, the composition of the present invention is freeze-thaw stable and the polymer has a glass transition temperature (Tg) of between about -15 C and about 15 C, typically about -15 C and about 12 C, more typically between about -5 C and about 5 C, and even more typically between about -5 C and about 0 C.
[0025] In another embodiment, the polymer of the present invention has a mean particle size (sometimes referred to as mean particle diameter, D50) of less than about 200 nm, more typically a mean particle size of less than about 190 nm, and most typically a mean particle size of less than about 175 nm.
[0026] In a further embodiment, the composition of the present invention is freeze-thaw stable, and the polymer can have a Tg of between about -15 C and about 12 C and a mean particle size of less than about 200 nm, or a Tg of between about -5 C and about 5 C and a mean particle size of less than about 200 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 200 nm, or a Tg of between about -15 C and about 12 C and a mean particle size of less than about 190 nm, or a Tg of between about -5 C
and about 5 C and a mean particle size of less than about 190 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 190 nm, or a Tg of between about -15 C and about 12 C and a mean particle size of less than about 175 nm, or a Tg of between about -5 C and about 5 C
and a mean particle size of less than about 175 nm, or a Tg of between about -C and about 0 C and a mean particle size of less than about 175 nm.
and about 5 C and a mean particle size of less than about 190 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 190 nm, or a Tg of between about -15 C and about 12 C and a mean particle size of less than about 175 nm, or a Tg of between about -5 C and about 5 C
and a mean particle size of less than about 175 nm, or a Tg of between about -C and about 0 C and a mean particle size of less than about 175 nm.
[0027] In another aspect, the present invention is a latex coating composition comprising: (a) a latex polymer as described above or as described anywhere herein; and (b) water. It is understood that the latex coating composition can contain other additive/ingredients including but not limited to biocides, surfactants, pigments, dispersants, etc. The latex coating composition can further comprise a freeze-thaw additive comprising an ethoxylated tristyryiphenol having the structural formula IC:
IC
IC
[0028] wherein, n is an integer of from 1 to 100, wherein R5 is -OH, -OCH3, -OC2H5, -OC3H7, -OC4H9, -OC5H11, -OC6H13, -Cl, -Br, -CN, Phosphonate (-P03 M+), Phosphate (P04 M+), Sulfate (S04 M), Sulfonate (S03 M+), carboxylate (COO-M+), a nonionic group, or a quaternary ammonium ion, wherein M+ is a cation including but not limited to H+, Na+, NH4, K+ or Li+. In one embodiment, n is an integer of from about 1 to 40.
[0029] In one embodiment, the latex coating composition contains a freeze-thaw additive in an amount effective to impart freeze-thaw stability to the composition.
In one embodiment, the effective amount is greater than about 1.3% by weight of the polymer, typically in an amount greater than about 1.6% by weight of the polymer. In another embodiment, the latex coating composition contains a freeze-thaw additive in an amount greater than about 2% by weight of the polymer, typically in an amount greater than about 4% by weight of the polymer.
In another embodiment, the latex coating composition contains a freeze-thaw additive in an amount greater than about 7.5% by weight of the polymer, typically in an amount greater than about 8% by weight of the polymer. In yet another embodiment, the latex coating composition contains a freeze-thaw additive in an amount greater than about 10% by weight of the polymer. In yet another embodiment, the latex coating composition contains a freeze-thaw additive in an amount greater than about 20% by weight of the polymer. In another embodiment, the latex coating composition contains a freeze-thaw additive in an amount between about 1.6% and 7.5% by weight of the polymer.
In one embodiment, the effective amount is greater than about 1.3% by weight of the polymer, typically in an amount greater than about 1.6% by weight of the polymer. In another embodiment, the latex coating composition contains a freeze-thaw additive in an amount greater than about 2% by weight of the polymer, typically in an amount greater than about 4% by weight of the polymer.
In another embodiment, the latex coating composition contains a freeze-thaw additive in an amount greater than about 7.5% by weight of the polymer, typically in an amount greater than about 8% by weight of the polymer. In yet another embodiment, the latex coating composition contains a freeze-thaw additive in an amount greater than about 10% by weight of the polymer. In yet another embodiment, the latex coating composition contains a freeze-thaw additive in an amount greater than about 20% by weight of the polymer. In another embodiment, the latex coating composition contains a freeze-thaw additive in an amount between about 1.6% and 7.5% by weight of the polymer.
[0030] In one embodiment, the aforementioned latex coating composition is freeze-thaw stable and the latex polymer comprises a glass transition temperature (Tg) of between about -20 C and about 12 C, typically between about -5 C and about 5 C, more typically between about -5 C and about 0 C. In another embodiment, a latex polymer in the aforementioned latex coating has a mean particle size of less than about 200 nm, more typically less than about nm, most typically, less than about 175.
[0031] In yet another aspect, the present invention is a method of preparing a latex polymer, comprising copolymerizing (1) at least one first monomer with (2) at least one second monomer, the second monomer a polymerizable reactive tristyrylphenol having the structural formula IA:
( OX~R
Ri Rs
( OX~R
Ri Rs
[0032] wherein R1, R2 and R3 are independently selected from:
-H, tert-butyl, butyl, isobutyl, -CH2 -CH2 , - CH or - CH -0,
-H, tert-butyl, butyl, isobutyl, -CH2 -CH2 , - CH or - CH -0,
[0033] wherein X is a divalent hydrocarbon radical selected from linear or branched alkylene radicals having from 2 to 8 carbon atoms; wherein n is in the range of 1-100, wherein R is an ethylenically unsaturated group including but not limited to acrylate, C1-C6 alkyl acrylate, allyl, vinyl, maleate, itaconate or fumarate.
R can also be selected from acrylo, methacrylo, acrylamido, methacrylamido, diallylamino, allyl ether, vinyl ether, a-alkenyl, maleimido, styrenyl, and/or a-alkyl styrenyl groups.
R can also be selected from acrylo, methacrylo, acrylamido, methacrylamido, diallylamino, allyl ether, vinyl ether, a-alkenyl, maleimido, styrenyl, and/or a-alkyl styrenyl groups.
[0034] In a further aspect, the present invention is a method of preparing latex polymer, comprising copolymerizing (1) at least one latex monomer with (2) at least one polymerizable reactive tristyrylphenol having the structural formula IB:
\ / O
IB
\ / O
IB
[0035] wherein n is an integer of from 1 to 100, and R4 is selected from H and C,-C1o alkyl, typically C1-C6 alkyl.
[0036] In one embodiment, in one or both of the aforementioned methods, an aqueous dispersion of the polymer is freeze-thaw stable, where the polymer comprises a glass transition temperature (Tg) of between about -20 C and about 20 C, more typically between about -15 C and about 12 C, most typically between about -5 C and about 0 C. In another embodiment, the polymer utilized in one or more of the above-referenced methods comprises a mean particle size of less than about 200 nm, more typically a mean particle size of less than about 190 nm, and most typically a mean particle size of less than about 175 nm.
[0037] In yet another aspect, the present invention is a method of preparing freeze-thaw stable latex polymer, comprising copolymerizing (1) at least one first monomer with (2) at least one second monomer having the structural formula IB:
\ / O
IB
\ / O
IB
[0038] wherein n is in the range of 1-100, R4 is selected from the group consisting of H and C1-C8 alkyl, and wherein the polymer has a glass transition temperature (Tg) of between about -15 C and about 12 C and a mean particle size of less than about 200 nm, or a Tg of between about -5 C and about 5 C and a mean particle size of less than about 200 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 200 nm, or a Tg of between about -15 C and about 12 C and a mean particle size of less than about 190 nm, or a Tg of between about -5 C and about 5 C and a mean particle size of less than about 190 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 190 nm, or a Tg of between about -15 C and about 12 C and a mean particle size of less than about 175 nm, or a Tg of between about -5 C and about 5 C and a mean particle size of less than about 175 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 175 nm.
[0039] In still a further aspect, the present invention is a low VOC latex coating composition, comprising: (a) at least one latex polymer; (b) at least one pigment;
(c) water; and (d) a freeze-thaw additive in an amount greater than about 1.6%
by weight of the polymer; wherein the freeze thaw additive comprises an ethoxylated tristyrylphenol having the structural formula IIA:
R
IIA
wherein, n is an integer of from 1 to 100, wherein R is -OH, -OCH3, -OC2H5, -OC3H7, -OC4H9, -OC5H11, -OC6H13, -Cl, -Br, -CN, Phosphonate (-P03 M+), Phosphate (P04 M+), Sulfate (S04 M+), Sulfonate (S03 M+), carboxylate (COO"
M+), a nonionic group, or a quaternary ammonium ion, wherein M+ is a cation including but not limited to H+, Na+, NH4, K+ or Li+. In one embodiment, n is an integer of from about 1 to 40.
(c) water; and (d) a freeze-thaw additive in an amount greater than about 1.6%
by weight of the polymer; wherein the freeze thaw additive comprises an ethoxylated tristyrylphenol having the structural formula IIA:
R
IIA
wherein, n is an integer of from 1 to 100, wherein R is -OH, -OCH3, -OC2H5, -OC3H7, -OC4H9, -OC5H11, -OC6H13, -Cl, -Br, -CN, Phosphonate (-P03 M+), Phosphate (P04 M+), Sulfate (S04 M+), Sulfonate (S03 M+), carboxylate (COO"
M+), a nonionic group, or a quaternary ammonium ion, wherein M+ is a cation including but not limited to H+, Na+, NH4, K+ or Li+. In one embodiment, n is an integer of from about 1 to 40.
[0040] In one embodiment, the freeze-thaw additive is present in the latex coating composition in an amount greater than about 2% by weight of the polymer. In another embodiment, the freeze-thaw additive is present in an amount greater than about 4% by weight of the polymer. In yet another embodiment, the freeze-thaw additive is present in an amount greater than about 7.5% by weight of the polymer. In a further embodiment, the freeze-thaw additive is present in an amount greater than about 20% by weight of the polymer. In still a further embodiment, the freeze-thaw additive is present in an amount between about 1.6% and 7.5% by weight of the polymer.
[0041] In one embodiment, the at least one latex monomer in the latex coating composition comprises a glass transition temperature (Tg) of between about -15 C and about 12 C, typically between about -5 C and about 5 C, more typically between about -5 C and about 0 C.
[0042] In one embodiment, the at least one latex polymer in the latex coating composition comprises has a mean particle size of less than about 200 nm, typically less than about 190 nm, and more typically less than about 175 nm.
[0043] In one embodiment, the latex coating composition is characterized by an open time of greater than about 2 minutes, an open time of greater than about minutes, an open time of greater than about 6 minutes or an open time of greater than about 12 minutes.
[0044] In a further embodiment, the latex coating composition of the present invention is freeze-thaw stable, wherein the polymer has a Tg of between about -15 C and about 12 C and a mean particle size of less than about 200 nm, or a Tg of between about -5 C and about 5 C and a mean particle size of less than about 200 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 200 nm, or a Tg of between about -15 C and about 12 C and a mean particle size of less than about 190 nm, or a Tg of between about -5 C
and about 5 C and a mean particle size of less than about 190 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 190 nm, or a Tg of between about -15 C and about 12 C and a mean particle size of less than about 175 nm, or a Tg of between about -5 C and about 5 C
and a mean particle size of less than about 175 nm, or a Tg of between about -C and about 0 C and a mean particle size of less than about 175 nm, where the latex coating composition is characterized by an open time of greater than about 2 minutes, an open time of greater than about 4 minutes, an open time of greater than about 6 minutes or an open time of greater than about 12 minutes.
and about 5 C and a mean particle size of less than about 190 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 190 nm, or a Tg of between about -15 C and about 12 C and a mean particle size of less than about 175 nm, or a Tg of between about -5 C and about 5 C
and a mean particle size of less than about 175 nm, or a Tg of between about -C and about 0 C and a mean particle size of less than about 175 nm, where the latex coating composition is characterized by an open time of greater than about 2 minutes, an open time of greater than about 4 minutes, an open time of greater than about 6 minutes or an open time of greater than about 12 minutes.
[0045] In a another embodiment, the latex coating composition of the present invention is freeze-thaw stable where the freeze-thaw additive is present in the latex coating composition in an effective amount, which in one embodiment is greater than about 2% by weight of the polymer, where the polymer has a Tg of between about -15 C and about 12 C and a mean particle size of less than about 200 nm, or a Tg of between about -5 C and about 5 C and a mean particle size of less than about 200 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 200 nm, or a Tg of between about -15 C
and about 12 C and a mean particle size of less than about 190 nm, or a Tg of between about -5 C and about 5 C and a mean particle size of less than about 190 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 190 nm, or a Tg of between about -15 C and about 12 C and a mean particle size of less than about 175 nm, or a Tg of between about -5 C
and about 5 C and a mean particle size of less than about 175 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 175 nm, where the latex coating composition is characterized by an open time of greater than about 2 minutes, an open time of greater than about 4 minutes, an open time of greater than about 6 minutes or an open time of greater than about 12 minutes.
and about 12 C and a mean particle size of less than about 190 nm, or a Tg of between about -5 C and about 5 C and a mean particle size of less than about 190 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 190 nm, or a Tg of between about -15 C and about 12 C and a mean particle size of less than about 175 nm, or a Tg of between about -5 C
and about 5 C and a mean particle size of less than about 175 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 175 nm, where the latex coating composition is characterized by an open time of greater than about 2 minutes, an open time of greater than about 4 minutes, an open time of greater than about 6 minutes or an open time of greater than about 12 minutes.
[0046] In a further embodiment, the latex coating composition of the present invention is freeze-thaw stable where the freeze-thaw additive is present in the latex coating composition in an amount greater than about 4% by weight of the polymer, and where the polymer has a Tg of between about -15 C and about 12 C and a mean particle size of less than about 200 nm, or a Tg of between about -5 C and about 5 C and a mean particle size of less than about 200 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 200 nm, or a Tg of between about -15 C and about 12 C and a mean particle size of less than about 190 nm, or a Tg of between about -5 C and about C and a mean particle size of less than about 190 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 190 nm, or a Tg of between about -15 C and about 12 C and a mean particle size of less than about 175 nm, or a Tg of between about -5 C and about 5 C and a mean particle size of less than about 175 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 175 nm, where the latex coating composition is characterized by an open time of greater than about 2 minutes, an open time of greater than about 4 minutes, an open time of greater than about minutes or an open time of greater than about 12 minutes.
[0047] In a further embodiment, the latex coating composition of the present invention is freeze-thaw stable where the freeze-thaw additive is present in the latex coating composition in an amount greater than about 7.5% by weight of the polymer, where the polymer has a Tg of between about -15 C and about 12 C
and a mean particle size of less than about 200 nm, or a Tg of between about -C and about 5 C and a mean particle size of less than about 200 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 200 nm, or a Tg of between about -15 C and about 12 C and a mean particle size of less than about 190 nm, or a Tg of between about -5 C and about 5 C
and a mean particle size of less than about 190 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 190 nm, or a Tg of between about -15 C and about 12 C and a mean particle size of less than about 175 nm, or a Tg of between about -5 C and about 5 C and a mean particle size of less than about 175 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 175 nm, where the latex coating composition is characterized by an open time of greater than about 2 minutes, an open time of greater than about 4 minutes, an open time of greater than about minutes or an open time of greater than about 12 minutes.
and a mean particle size of less than about 200 nm, or a Tg of between about -C and about 5 C and a mean particle size of less than about 200 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 200 nm, or a Tg of between about -15 C and about 12 C and a mean particle size of less than about 190 nm, or a Tg of between about -5 C and about 5 C
and a mean particle size of less than about 190 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 190 nm, or a Tg of between about -15 C and about 12 C and a mean particle size of less than about 175 nm, or a Tg of between about -5 C and about 5 C and a mean particle size of less than about 175 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 175 nm, where the latex coating composition is characterized by an open time of greater than about 2 minutes, an open time of greater than about 4 minutes, an open time of greater than about minutes or an open time of greater than about 12 minutes.
[0048] In a further embodiment, the latex coating composition of the present invention is freeze-thaw stable where the freeze-thaw additive is present in the latex coating composition in an amount greater than about 20% by weight of the polymer, where the polymer has a Tg of between about -15 C and about 12 C
and a mean particle size of less than about 200 nm, or a Tg of between about -5 C and about 5 C and a mean particle size of less than about 200 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 200 nm, or a Tg of between about -15 C and about 12 C and a mean particle size of less than about 190 nm, or a Tg of between about -5 C and about 5 C
and a mean particle size of less than about 190 nm, or a Tg of between about -C and about 0 C and a mean particle size of less than about 190 nm, or a Tg of between about -15 C and about 12 C and a mean particle size of less than about 175 nm, or a Tg of between about -5 C and about 5 C and a mean particle size of less than about 175 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 175 nm, where the latex coating composition is characterized by an open time of greater than about 2 minutes, an open time of greater than about 4 minutes, an open time of greater than about minutes or an open time of greater than about 12 minutes.
and a mean particle size of less than about 200 nm, or a Tg of between about -5 C and about 5 C and a mean particle size of less than about 200 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 200 nm, or a Tg of between about -15 C and about 12 C and a mean particle size of less than about 190 nm, or a Tg of between about -5 C and about 5 C
and a mean particle size of less than about 190 nm, or a Tg of between about -C and about 0 C and a mean particle size of less than about 190 nm, or a Tg of between about -15 C and about 12 C and a mean particle size of less than about 175 nm, or a Tg of between about -5 C and about 5 C and a mean particle size of less than about 175 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 175 nm, where the latex coating composition is characterized by an open time of greater than about 2 minutes, an open time of greater than about 4 minutes, an open time of greater than about minutes or an open time of greater than about 12 minutes.
[0049] In a further embodiment, the latex coating composition of the present invention is freeze-thaw stable where the freeze-thaw additive is present in the latex coating composition in an amount between about 1.6% and 7.5% by weight of the polymer, where the polymer has a Tg of between about -15 C and about 12 C and a mean particle size of less than about 200 nm, or a Tg of between about -5 C and about 5 C and a mean particle size of less than about 200 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 200 nm, or a Tg of between about -15 C and about 12 C and a mean particle size of less than about 190 nm, or a Tg of between about -5 C and about 5 C and a mean particle size of less than about 190 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 190 nm, or a Tg of between about -15 C and about 12 C and a mean particle size of less than about 175 nm, or a Tg of between about -5 C and about 5 C and a mean particle size of less than about 175 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 175 nm, where the latex coating composition is characterized by an open time of greater than about 2 minutes, an open time of greater than about 4 minutes, an open time of greater than about minutes or an open time of greater than about 12 minutes.
[0050] In still yet another aspect, the present invention is a latex coating composition, comprising: (a) at least one latex polymer; (b) at least one pigment;
(c) water; and (d) a freeze-thaw additive in an amount greater than about 1.6%
by weight of the polymer; wherein the freeze thaw additive comprises an ethoxylated tributylphenol having the structural formula IIB:
O
IIB;
wherein, n is an integer of from 1 to 100, wherein R5 is -OH, -OCH3, -OC2H5, -OC3H7, -OC4H9, -OC5H11, -OC6H13, -Cl, -Br, -CN, Phosphonate (-P03 M+), Phosphate (P04 M+), Sulfate (S04 M+), Sulfonate (S03 M+), carboxylate (COO-M+), a nonionic group, or a quaternary ammonium ion, wherein M+ is a cation including but not limited to H+, Na+, NH4, K+ or Li+. In one embodiment, n is an integer of from about 1 to 40.
(c) water; and (d) a freeze-thaw additive in an amount greater than about 1.6%
by weight of the polymer; wherein the freeze thaw additive comprises an ethoxylated tributylphenol having the structural formula IIB:
O
IIB;
wherein, n is an integer of from 1 to 100, wherein R5 is -OH, -OCH3, -OC2H5, -OC3H7, -OC4H9, -OC5H11, -OC6H13, -Cl, -Br, -CN, Phosphonate (-P03 M+), Phosphate (P04 M+), Sulfate (S04 M+), Sulfonate (S03 M+), carboxylate (COO-M+), a nonionic group, or a quaternary ammonium ion, wherein M+ is a cation including but not limited to H+, Na+, NH4, K+ or Li+. In one embodiment, n is an integer of from about 1 to 40.
[0051] In one embodiment, the freeze-thaw additive is present in the latex coating composition in an amount greater than about 2% by weight of the polymer. In another embodiment, the freeze-thaw additive is present in an amount greater than about 4% by weight of the polymer. In yet another embodiment, the freeze-thaw additive is present in an amount greater than about 7.5% by weight of the polymer. In a further embodiment, the freeze-thaw additive is present in an amount greater than about 20% by weight of the polymer. In still a further embodiment, the freeze-thaw additive is present in an amount between about 1.6% and 7.5% by weight of the polymer.
[0052] In one embodiment, the at least one latex monomer in the latex coating composition comprises a glass transition temperature (Tg) of between about -15 C and about 12 C, typically between about -5 C and about 5 C, more typically between about -5 C and about 0 C.
[0053] In one embodiment, the at least one latex monomer in the latex coating composition comprises has a mean particle size of less than about 200 nm, typically less than about 190 nm, and more typically less than about 175 nm.
[0054] In one embodiment, the latex coating composition is characterized by an open time of greater than about 2 minutes, an open time of greater than about minutes, an open time of greater than about 6 minutes or an open time of greater than about 12 minutes.
[0055] In a further embodiment, the latex coating composition of the present invention is freeze-thaw stable, wherein the polymer has a Tg of between about -15 C and about 12 C and a mean particle size of less than about 200 nm, or a Tg of between about -5 C and about 5 C and a mean particle size of less than about 200 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 200 nm, or a Tg of between about -15 C and about 12 C and a mean particle size of less than about 190 nm, or a Tg of between about -5 C
and about 5 C and a mean particle size of less than about 190 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 190 nm, or a Tg of between about -15 C and about 12 C and a mean particle size of less than about 175 nm, or a Tg of between about -5 C and about 5 C
and a mean particle size of less than about 175 nm, or a Tg of between about -C and about 0 C and a mean particle size of less than about 175 nm, where the latex coating composition is characterized by an open time of greater than about 2 minutes, an open time of greater than about 4 minutes, an open time of greater than about 6 minutes or an open time of greater than about 12 minutes.
and about 5 C and a mean particle size of less than about 190 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 190 nm, or a Tg of between about -15 C and about 12 C and a mean particle size of less than about 175 nm, or a Tg of between about -5 C and about 5 C
and a mean particle size of less than about 175 nm, or a Tg of between about -C and about 0 C and a mean particle size of less than about 175 nm, where the latex coating composition is characterized by an open time of greater than about 2 minutes, an open time of greater than about 4 minutes, an open time of greater than about 6 minutes or an open time of greater than about 12 minutes.
[0056] In a another embodiment, the latex coating composition of the present invention is freeze-thaw stable where the freeze-thaw additive is present in the latex coating composition in an amount greater than about 2% by weight of the polymer, where the polymer has a Tg of between about -15 C and about 12 C
and a mean particle size of less than about 200 nm, or a Tg of between about -5 C and about 5 C and a mean particle size of less than about 200 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 200 nm, or a Tg of between about -15 C and about 12 C and a mean particle size of less than about 190 nm, or a Tg of between about -5 C and about 5 C
and a mean particle size of less than about 190 nm, or a Tg of between about -C and about 0 C and a mean particle size of less than about 190 nm, or a Tg of between about -15 C and about 12 C and a mean particle size of less than about 175 nm, or a Tg of between about -5 C and about 5 C and a mean particle size of less than about 175 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 175 nm, where the latex coating composition is characterized by an open time of greater than about 2 minutes, an open time of greater than about 4 minutes, an open time of greater than about minutes or an open time of greater than about 12 minutes.
and a mean particle size of less than about 200 nm, or a Tg of between about -5 C and about 5 C and a mean particle size of less than about 200 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 200 nm, or a Tg of between about -15 C and about 12 C and a mean particle size of less than about 190 nm, or a Tg of between about -5 C and about 5 C
and a mean particle size of less than about 190 nm, or a Tg of between about -C and about 0 C and a mean particle size of less than about 190 nm, or a Tg of between about -15 C and about 12 C and a mean particle size of less than about 175 nm, or a Tg of between about -5 C and about 5 C and a mean particle size of less than about 175 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 175 nm, where the latex coating composition is characterized by an open time of greater than about 2 minutes, an open time of greater than about 4 minutes, an open time of greater than about minutes or an open time of greater than about 12 minutes.
[0057] In a further embodiment, the latex coating composition of the present invention is freeze-thaw stable where the freeze-thaw additive is present in the latex coating composition in an amount greater than about 4% by weight of the polymer, and where the polymer has a Tg of between about -15 C and about 12 C and a mean particle size of less than about 200 nm, or a Tg of between about -5 C and about 5 C and a mean particle size of less than about 200 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 200 nm, or a Tg of between about -15 C and about 12 C and a mean particle size of less than about 190 nm, or a Tg of between about -5 C and about 5 C and a mean particle size of less than about 190 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 190 nm, or a Tg of between about -15 C and about 12 C and a mean particle size of less than about 175 nm, or a Tg of between about -5 C and about 5 C and a mean particle size of less than about 175 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 175 nm, where the latex coating composition is characterized by an open time of greater than about 2 minutes, an open time of greater than about 4 minutes, an open time of greater than about minutes or an open time of greater than about 12 minutes.
[0058] In a further embodiment, the latex coating composition of the present invention is freeze-thaw stable where the freeze-thaw additive is present in the latex coating composition in an amount greater than about 7.5% by weight of the polymer, where the polymer has a Tg of between about -15 C and about 12 C
and a mean particle size of less than about 200 nm, or a Tg of between about -C and about 5 C and a mean particle size of less than about 200 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 200 nm, or a Tg of between about -15 C and about 12 C and a mean particle size of less than about 190 nm, or a Tg of between about -5 C and about 5 C
and a mean particle size of less than about 190 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 190 nm, or a Tg of between about -15 C and about 12 C and a mean particle size of less than about 175 nm, or a Tg of between about -5 C and about 5 C and a mean particle size of less than about 175 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 175 nm, where the latex coating composition is characterized by an open time of greater than about 2 minutes, an open time of greater than about 4 minutes, an open time of greater than about minutes or an open time of greater than about 12 minutes.
and a mean particle size of less than about 200 nm, or a Tg of between about -C and about 5 C and a mean particle size of less than about 200 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 200 nm, or a Tg of between about -15 C and about 12 C and a mean particle size of less than about 190 nm, or a Tg of between about -5 C and about 5 C
and a mean particle size of less than about 190 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 190 nm, or a Tg of between about -15 C and about 12 C and a mean particle size of less than about 175 nm, or a Tg of between about -5 C and about 5 C and a mean particle size of less than about 175 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 175 nm, where the latex coating composition is characterized by an open time of greater than about 2 minutes, an open time of greater than about 4 minutes, an open time of greater than about minutes or an open time of greater than about 12 minutes.
[0059] In a further embodiment, the latex coating composition of the present invention is freeze-thaw stable where the freeze-thaw additive is present in the latex coating composition in an amount greater than about 20% by weight of the polymer, where the polymer has a Tg of between about -15 C and about 12 C
and a mean particle size of less than about 200 nm, or a Tg of between about -5 C and about 5 C and a mean particle size of less than about 200 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 200 nm, or a Tg of between about -15 C and about 12 C and a mean particle size of less than about 190 nm, or a Tg of between about -5 C and about 5 C
and a mean particle size of less than about 190 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 190 nm, or a Tg of between about -15 C and about 12 C and a mean particle size of less than about 175 nm, or a Tg of between about -5 C and about 5 C and a mean particle size of less than about 175 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 175 nm, where the latex coating composition is characterized by an open time of greater than about 2 minutes, an open time of greater than about 4 minutes, an open time of greater than about minutes or an open time of greater than about 12 minutes.
and a mean particle size of less than about 200 nm, or a Tg of between about -5 C and about 5 C and a mean particle size of less than about 200 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 200 nm, or a Tg of between about -15 C and about 12 C and a mean particle size of less than about 190 nm, or a Tg of between about -5 C and about 5 C
and a mean particle size of less than about 190 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 190 nm, or a Tg of between about -15 C and about 12 C and a mean particle size of less than about 175 nm, or a Tg of between about -5 C and about 5 C and a mean particle size of less than about 175 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 175 nm, where the latex coating composition is characterized by an open time of greater than about 2 minutes, an open time of greater than about 4 minutes, an open time of greater than about minutes or an open time of greater than about 12 minutes.
[0060] In a further embodiment, the latex coating composition of the present invention is freeze-thaw stable where the freeze-thaw additive is present in the latex coating composition in an amount between about 1.3% and 7.5% by weight of the polymer, where the polymer has a Tg of between about -15 C and about 12 C and a mean particle size of less than about 200 nm, or a Tg of between about -5 C and about 5 C and a mean particle size of less than about 200 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 200 nm, or a Tg of between about -15 C and about 12 C and a mean particle size of less than about 190 nm, or a Tg of between about -5 C and about C and a mean particle size of less than about 190 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 190 nm, or a Tg of between about -15 C and about 12 C and a mean particle size of less than about 175 nm, or a Tg of between about -5 C and about 5 C and a mean particle size of less than about 175 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 175 nm, where the latex coating composition is characterized by an open time of greater than about 2 minutes, an open time of greater than about 4 minutes, an open time of greater than about minutes or an open time of greater than about 12 minutes.
[0061] These and other features and advantages of the present invention will become more readily apparent to those skilled in the art upon consideration of the following detailed description, which describe both the preferred and alternative embodiments of the present invention.
BRIEF DESCRIPTION OF DRAWINGS
BRIEF DESCRIPTION OF DRAWINGS
[0062] FIG. 1 is a chart illustrating the Glass Transition temperature (Tg) of latex binders (prepared from the `514 application description) using different emulsifying surfactants during emulsion polymerization.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0063] The present invention relates to the use of a particular family of alkoxylated compounds, e.g., alkoxylated tristyryiphenols and alkoxylated tributylphenols, provided with an ethylene oxide chain for improving freeze-thaw stability of latex binders and paints. This family of alkoxylated compounds can improve other properties as well, for example, open time, stain resistance, film gloss, dispersibility, hiding and scrub resistance, low temperature film formation, foam resistance, block resistance, adhesion and water sensitivity, among others.
[0064] As used herein, the term "alkyl" means a saturated hydrocarbon radical, which may be straight, branched or cyclic, such as, for example, methyl, ethyl, n-propyl, iso-propyl, n-butyl, sec-butyl, t-butyl, pentyl, n-hexyl, cyclohexyl.
[0065] As used herein, the term "cycloalkyl" means a saturated hydrocarbon radical that includes one or more cyclic alkyl rings, such as, for example, cyclopentyl, cyclooctyl, and adamantanyl.
[0066] As used herein, the term "hydroxyalkyl" means an alkyl radical, more typically an alkyl radical, that is substituted with a hydroxyl groups, such as for example, hydroxymethyl, hydroxyethyl, hydroxypropyl, and hydroxydecyl.
[0067] As used herein, the term "alkylene" means a bivalent acyclic saturated hydrocarbon radical, including but not limited to methylene, polymethylene, and alkyl substituted polymethylene radicals, such as, for example, dimethylene, tetramethylene, and 2-methyltrimethylene.
[0068] As used herein, the term "alkenyl" means an unsaturated straight chain, branched chain, or cyclic hydrocarbon radical that contains one or more carbon-carbon double bonds, such as, for example, ethenyl, 1-propenyl, 2-propenyl.
[0069] As used herein, the term "aryl" means a monovalent unsaturated hydrocarbon radical containing one or more six-membered carbon rings in which the unsaturation may be represented by three conjugated double bonds, which may be substituted one or more of carbons of the ring with hydroxy, alkyl, alkenyl, halo, haloalkyl, or amino, such as, for example, phenoxy, phenyl, methylphenyl, dimethylphenyl, trimethylphenyl, chlorophenyl, trichloromethylphenyl, aminophenyl.
[0070] As used herein, the term "aralkyl" means an alkyl group substituted with one or more aryl groups, such as, for example, phenylmethyl, phenylethyl, triphenylmethyl.
[0071]As used herein, the terminology "(Cn-Cm)" in reference to an organic group, wherein n and m are each integers, indicates that the group may contain from n carbon atoms to m carbon atoms per group.
[0072] As used herein, the terminology "ethylenic unsaturation" means a terminal (that is, e.g., a, (3) carbon-carbon double bond.
[0073] The present invention includes latex polymers and latex dispersions having low-VOC content and excellent freeze-thaw stability and open time properties compared to conventional aqueous coating compositions, as well as methods of use. Such latex polymers can include at least one latex polymer copolymerized or blended with a particular family of alkoxylated compounds.
Typically the latex has a Tg of less than 20 C, more typically less than 15 C, still more typically less than 5 C. More typically, the latex has a Tg in the range of from about -15 C to about 12 C, more typically from about -5 C to about 5 C, more typically in the range from -5 C to about 0 C. In one embodiment, the latex polymer of the present invention has a weight average molecular weight of from about 1,000 to 5,000,000, typically 5,000 to 2,000,000. In another embodiment, the latex polymer of the present invention has a weight average molecular weight of from about 10,000 to 250,000.
Typically the latex has a Tg of less than 20 C, more typically less than 15 C, still more typically less than 5 C. More typically, the latex has a Tg in the range of from about -15 C to about 12 C, more typically from about -5 C to about 5 C, more typically in the range from -5 C to about 0 C. In one embodiment, the latex polymer of the present invention has a weight average molecular weight of from about 1,000 to 5,000,000, typically 5,000 to 2,000,000. In another embodiment, the latex polymer of the present invention has a weight average molecular weight of from about 10,000 to 250,000.
[0074] The present invention provides aqueous compositions, for example, aqueous coating compositions, having low-VOC content and excellent freeze-thaw stability and open time properties comparable to conventional aqueous coating compositions. The aqueous compositions of the invention are aqueous polymer dispersions which include at least one latex polymer copolymerized or blended with a particular family of alkoxylated compounds, e.g., alkoxylated tristyrylphenol. Generally, the latex polymer is present in such aqueous compositions or paints from about 15% to about 40% by weight of the composition for semigloss and from about 5% to up to about 75%, typically about 5% to about 50% by weight of the composition for flat paint. Paints or other aqueous coatings of the present invention typically further include at least one pigment.
[0075] The members of the particular family of alkoxylated compounds, e.g., alkoxylated tristyrylphenols and/or tributylphenols, can be employed in a number ouof ways for improving freeze-thaw stability of latex binders and paints. The present invention may employ polymerizable reactive alkoxylated monomers to form a latex comonomer, surface active alkoxylated compounds as a surfactant (emulsifier) to be present during latex polymer formation, and/or surface active alkoxylated compounds as an additive to an aqueous dispersion of latex polymer or copolymer.
[0076] Reactive polymerizable tristyrylphenol ethoxylates
[0077] In one embodiment, polymerizable reactive alkoxylated (second) monomer of the following formula IA can be copolymerized (with a first monomer) into the backbone of the latex polymer.
OXR
n R~ I 3R3
OXR
n R~ I 3R3
[0078] wherein B is a 5 or 6 membered cycloalkyl ring, e.g., a cyclohexyl ring, or a single ring aromatic hydrocarbon having a 6 membered ring, e.g., a benzene ring;
[0079] R1, R2 and R3 are independently selected from:
[0080] -H, butyl, tert-butyl, isobutyl, -CH2 O , - CH2 -0 - CH O , or - CH
I -~ 1 -0
I -~ 1 -0
[0081] with the proviso that one or none of R1, R2 and R3 is -H.
[0082] wherein, X is C2H4, C3H6, or C4H8, or X is a divalent hydrocarbon radical selected from linear or branched alkylene radicals having from 2 to 8 carbon atoms; n is an integer of from 1 to 100, for example from about 4 to 80 or 8 to 25;
wherein R is an ethylenically unsaturated group. In one embodiment, n is an integer of from 4 to 80. In one embodiment, n is an integer of from 4 to 60.
In one embodiment, n is an integer of from 10 to 50. In one embodiment, n is an integer of from 10 to 25.
wherein R is an ethylenically unsaturated group. In one embodiment, n is an integer of from 4 to 80. In one embodiment, n is an integer of from 4 to 60.
In one embodiment, n is an integer of from 10 to 50. In one embodiment, n is an integer of from 10 to 25.
[0083] Typically, R includes acrylate, or C1-C6 alkyl acrylate, e.g., methacrylate, allyl, vinyl, maleate, itaconate or fumarate, typically R is acrylate or methacrylate.
[0084] Suitable polymerizable functional groups R include, for example, acrylo, methacrylo, acrylamido, methacrylamido, diallylamino, allyl ether, vinyl ether, a-alkenyl, maleimido, styrenyl, and a-alkyl styrenyl groups.
[0085] For example, suitable polymerizable functional groups R have the chemical structure: RaCH=C(Rb)COO-, wherein if Ra is H, then Rb is H, C1-C4 alkyl, or -CH2COOX; if Ra is -C(O)OX, then Rb is H or -CH2C(O)OXa; or if Ra is CH3, then Rb is H and Xa is H or C1-C4 alkyl.
[0086] For example, other suitable polymerizable functional groups R have the chemical structure: -HC=CYZ or -OCH=CYZ, wherein Y is H, CH3, or Cl ; Z is CN, Cl, - COOR , -C6H4Rc, -COORd, or -HC=CH2; Rd is C1 -C8 alkyl or C2-C8 hydroxy alkyl; Rc is H, Cl, Br, or C1-C4 alkyl.
[0087] Typically the monomer has the formula IB:
(0X-)-R
in R, R3
(0X-)-R
in R, R3
[0088] R2 113,
[0089] wherein, R, R1, R2, R3, X and n are as defined for the structure of formula IA. If desired, the aromatic ring shown in structural formula IB may be saturated.
For example, such a saturated monomer may be made by saturating a form of the monomer wherein H is in the R position and then replacing the H in the R
position with one of the other above-listed R groups.
For example, such a saturated monomer may be made by saturating a form of the monomer wherein H is in the R position and then replacing the H in the R
position with one of the other above-listed R groups.
[0090] In one embodiment, at least one monomer can be copolymerized with a second monomer having structure IB-1:
[0091]
C OCnH2n \ R
M
Ri R3
C OCnH2n \ R
M
Ri R3
[0092] wherein R is R7-C CH2 .
[0093] R1, R2 and R3 are each independently H, branched (C3-C8 alkyl), branched (C4-C8) alkene or R5-R6-;
[0094] R5 is aryl or (C6-C8) cycloalkyl,
[0095] R6 is (C1-C6) alkylene,
[0096] R7 is a divalent linking group, 0, (C1-C6) alkylene, R9-C , or absent,
[0097] R8 is H or methyl,
[0098] R9 is 0 or NR1o,
[0099] Rio is H or (C1-C4) alkyl; n is an integer of from 2 to 4, and m is an integer of from 1 to 100.
[00100] In one emboidment, R1, R2 and R3 are independently selected from:
[00101] -H, butyl, tert-butyl, isobutyl, -CH2 -CH2 , - CH or - CH
[00102] In one embodiment, R can be acrylate, C1-C6 alkyl acrylate, allyl, vinyl, maleate, itaconate or fumarate. In one embodiment, R is at least one of acrylo, methacrylo, acrylamido, methacrylamido, diallylamino, allyl ether, vinyl ether, a-alkenyl, maleimido, styrenyl, and/or a-alkyl styrenyl groups.
[00103] In another embodiment, the second monomer is an ethoxylated tributylphenol. In another embodiment, the monomer is an ethoxylated tristyrylphenol. The polymerizable reactive ethoxylated tristyrylphenols have the structural formula IC and the polymerizable reactive ethoxylated tributylphenols have the structural formula IC-1, respectively, as follows:
Ra \ / O
Ra \ / O
[00104]
IC;
o Ra
IC;
o Ra
[00105] IC-1
[00106] wherein, n is an integer of from 1-100, for example, 4 to 60 or 8 to 25;
[00107] R4 is a member of the group H, C,-C8 hydroxy alkyl, Ci-C6 alkyl, for example, CH3 or C2H5.
[00108] Thus, the reactive polymerizable ethoxylated tristyrylphenol monomer has a tristyrylphenol portion, an alkylene oxide portion and a reactive substituted or unsubstituted acrylic end group for polymerization. Likewise, the reactive polymerizable ethoxylated tributylphenol monomer has a tributylphenol portion, an alkylene oxide portion and a reactive substituted or unsubstituted acrylic end group for polymerization. If desired, the ethylene oxide group shown in structural formula IC or IC-1 may be replaced with the above discussed -(OX)-group to form an alkoxylated tristyrylphenol or tributylphenol, respectively, and the -C(O)-CHR4CH2 end group may be replaced by allyl, vinyl, maleate, itaconate or fumarate.
[00109] Tristyrylphenol ethoxylates, for other uses, are disclosed by US
patent number 6,146,570, published PCT patent application number WO
98/012921 and WO 98/045212, incorporated herein by reference.
patent number 6,146,570, published PCT patent application number WO
98/012921 and WO 98/045212, incorporated herein by reference.
[00110] If desired the aromatic rings of the styryl groups in Formula IC may be saturated.
[00111] When reactive polymerizable alkoxylated monomer of IA, IB, IC
and/or IC-1 is copolymerized into the backbone of the latex polymer, the latex polymer is made from a mixture wherein the reactive tristyrylphenol or tributylphenol monomer is 1 to 20 parts per 100 parts by weight of monomers used to form the copolymer, more typically 2 to 15, 2 to 8, or 2 to 6 parts per 100 parts by weight of monomers used to form the copolymer. In one embodiment, both the reactive polymerizable alkoxylated monomer of formula IC and IC-1 are utilized and copolymerized into the backbone of a latex polymer.
Other Monomers
and/or IC-1 is copolymerized into the backbone of the latex polymer, the latex polymer is made from a mixture wherein the reactive tristyrylphenol or tributylphenol monomer is 1 to 20 parts per 100 parts by weight of monomers used to form the copolymer, more typically 2 to 15, 2 to 8, or 2 to 6 parts per 100 parts by weight of monomers used to form the copolymer. In one embodiment, both the reactive polymerizable alkoxylated monomer of formula IC and IC-1 are utilized and copolymerized into the backbone of a latex polymer.
Other Monomers
[00112] In addition to the polymerizable tristyrylphenol monomer and/or polymerizable tributylphenol monomer, there are other monomers from which the at least one latex polymer used in the aqueous coating composition, e.g., paint, is typically derived. For purposes of this description, these other monomers from which latex polymers may be derived are termed latex monomers. Typically, these other latex monomers comprise at least one acrylic monomer selected from the group consisting of acrylic acid, acrylic acid esters, methacrylic acid, and methacrylic acid esters. In addition, the other monomers for making the latex polymer can optionally be selected from one or more monomers selected from the group consisting of styrene, a-methyl styrene, vinyl chloride, acrylonitrile, methacrylonitrile, ureido methacrylate, vinyl acetate, vinyl esters of branched tertiary monocarboxylic acids (e.g. vinyl esters commercially available under the mark VEOVA from Shell Chemical Company or sold as EXXAR Neo Vinyl Esters by ExxonMobil Chemical Company), itaconic acid, crotonic acid, maleic acid, fumaric acid, and ethylene. It is also possible to include C4-C8 conjugated dienes such as 1,3-butadiene, isoprene and chloroprene. Typically, the monomers include one or more monomers selected from the group consisting of n-butyl acrylate, methyl methacrylate, styrene and 2-ethylhexyl acrylate. The latex polymer is typically selected from the group consisting of pure acrylics (comprising acrylic acid, methacrylic acid, an acrylate ester, and/or a methacrylate ester as the main monomers); styrene acrylics (comprising styrene and acrylic acid, methacrylic acid, an acrylate ester, and/or a methacrylate ester as the main monomers); vinyl acrylics (comprising vinyl acetate and acrylic acid, methacrylic acid, an acrylate ester, and/or a methacrylate ester as the main monomers); and acrylated ethylene vinyl acetate copolymers (comprising ethylene, vinyl acetate and acrylic acid, methacrylic acid, an acrylate ester, and/or a methacrylate ester as the main monomers). The monomers can also include other main monomers such as acrylamide and acrylonitrile, and one or more functional monomers such as itaconic acid and ureido methacrylate, as would be readily understood by those skilled in the art. In a particularly preferred embodiment, the latex polymer is a pure acrylic such as a butyl acrylate/methyl methacrylate copolymer derived from monomers including butyl acrylate and methyl methacrylate.
[00113] In one embodiment, the reactive polymerizable alkoxylated monomer of formula IA, IB, IC and/or IC-1 are utilized and copolymerized with one of the monomers listed under "other monomers" into the backbone of a latex polymer under reaction conditions. In another embodiment, the reactive polymerizable alkoxylated monomer of formula IA, IB, IC and/or IC-1 are utilized and copolymerized with two or more of the monomers listed under "other monomers" into the backbone of a latex polymer under reaction conditions. In another embodiment, one or more reactive polymerizable alkoxylated monomers of formula IA, IB, IC and/or IC-1 are utilized and copolymerized with one or more of the monomers listed under "other monomers" into the backbone of a latex polymer under reaction conditions.
[00114] The latex polymer dispersion typically includes from about 30 to about 75% solids and a mean latex particle size of from about 70 to about 650 nm. In another embodiment, the polymer of the present invention has a mean particle size of less than about 400nm, typically a mean particle size of less than about 200 nm, more typically a mean particle size of less than about 190 nm, and most typically a mean particle size of less than about 175 nm. In another embodiment, the polymer has a mean particle size of from about 75 nm to about 400 nm.
[00115] The latex polymer is typically present in the aqueous coating composition in an amount from about 5 to about 60 percent by weight, and more typically from about 8 to about 40 percent by weight (i.e. the weight percentage of the dry latex polymer based on the total weight of the coating composition).
[00116] The resulting aqueous coating composition containing the polymer of the present invention is freeze-thaw stable without having to add anti-freeze agents, or adding small amounts of anti-freeze agents, as described above.
Therefore, aqueous coating compositions can be produced in accordance with the invention that possess lower VOC levels than conventional aqueous coating compositions and thus that are more environmentally desirable.
Therefore, aqueous coating compositions can be produced in accordance with the invention that possess lower VOC levels than conventional aqueous coating compositions and thus that are more environmentally desirable.
[00117] In another embodiment, the resulting latex polymer may be incorporated into an aqueous coating composition along with an emulsion surfactant of the present invention as described below and/or a freeze-thaw additive of the present invention as described below. The addition of the freeze-thaw additive has little or no effect on the VOC levels of the aqueous coating composition, and, thus, aqueous coating compositions can be produced in that possess lower VOC levels than conventional aqueous coating compositions. In such an embodiment, the latex coating composition contains a freeze-thaw additive as described herein in an amount greater than about 1.3% by weight of the polymer. In another embodiment, the latex coating composition contains a freeze-thaw additive as described herein in an amount greater than about 1.6%
by weight of the polymer. In another embodiment, the latex coating composition contains a freeze-thaw additive as described herein in an amount greater than about 2% by weight of the polymer. In another embodiment, the latex coating composition contains a freeze-thaw additive as described herein in an amount greater than about 4% by weight of the polymer. In another embodiment, the latex coating composition contains a freeze-thaw additive as described herein in an amount greater than about 7.5% by weight of the polymer. In another embodiment, the latex coating composition contains a freeze-thaw additive as described herein in an amount greater than about 8% by weight of the polymer.
In another embodiment, the latex coating composition contains a freeze-thaw additive in an amount between about 1.6% and 7.5% by weight of the polymer.
In another embodiment, the latex coating composition contains a freeze-thaw additive in an amount between about 1.6% and 45% by weight of the polymer, typically between about 1.6% and 35% by weight of the polymer.
by weight of the polymer. In another embodiment, the latex coating composition contains a freeze-thaw additive as described herein in an amount greater than about 2% by weight of the polymer. In another embodiment, the latex coating composition contains a freeze-thaw additive as described herein in an amount greater than about 4% by weight of the polymer. In another embodiment, the latex coating composition contains a freeze-thaw additive as described herein in an amount greater than about 7.5% by weight of the polymer. In another embodiment, the latex coating composition contains a freeze-thaw additive as described herein in an amount greater than about 8% by weight of the polymer.
In another embodiment, the latex coating composition contains a freeze-thaw additive in an amount between about 1.6% and 7.5% by weight of the polymer.
In another embodiment, the latex coating composition contains a freeze-thaw additive in an amount between about 1.6% and 45% by weight of the polymer, typically between about 1.6% and 35% by weight of the polymer.
[00118] In a further embodiment, the polymer of the present invention is freeze-thaw stable, and can have a Tg of between about -15 C and about 12 C
and a mean particle size of less than about 200 nm, or a Tg of between about -C and about 5 C and a mean particle size of less than about 200 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 200 nm, or a Tg of between about -15 C and about 12 C and a mean particle size of less than about 190 nm, or a Tg of between about -5 C and about 5 C
and a mean particle size of less than about 190 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 190 nm, or a Tg of between about -15 C and about 12 C and a mean particle size of less than about 175 nm, or a Tg of between about -5 C and about 5 C and a mean particle size of less than about 175 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 175 nm.
and a mean particle size of less than about 200 nm, or a Tg of between about -C and about 5 C and a mean particle size of less than about 200 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 200 nm, or a Tg of between about -15 C and about 12 C and a mean particle size of less than about 190 nm, or a Tg of between about -5 C and about 5 C
and a mean particle size of less than about 190 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 190 nm, or a Tg of between about -15 C and about 12 C and a mean particle size of less than about 175 nm, or a Tg of between about -5 C and about 5 C and a mean particle size of less than about 175 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 175 nm.
[00119] The latex polymer including the reactive polymerizable alkoxylated monomer of formula IA, IB or IC can be used in combination with other ionic or non-ionic type of surfactants that are either polymerizable or non-polymerizable, in the aqueous coating composition. In particular, the polymer latex binder can be prepared using emulsion polymerization by feeding the monomers used to form the latex binder to a reactor in the presence of at least one initiator and the at least one reactive polymerizable alkoxylated monomer of formula IA, IB, IC or IC-1 and polymerizing the monomers to produce the latex binder. The monomers fed to a reactor to prepare the polymer latex binder typically include at least one acrylic monomer selected from the group consisting of acrylic acid, acrylic acid esters, methacrylic acid, and methacrylic acid esters. In addition, the monomers can include styrene, vinyl acetate, or ethylene. The monomers can also include one or more monomers selected from the group consisting of styrene, [alpha]-methyl styrene, vinyl chloride, acrylonitrile, methacrylonitrile, ureido methacrylate, vinyl acetate, vinyl esters of branched tertiary monocarboxylic acids, itaconic acid, crotonic acid, maleic acid, fumaric acid, and ethylene. It is also possible to include C4-C8 conjugated dienes such as 1,3-butadiene, isoprene or chloroprene.
Typically, the monomers include one or more monomers selected from the group consisting of n-butyl acrylate, methyl methacrylate, styrene and 2-ethylhexyl acrylate. The initiator can be any initiator known in the art for use in emulsion polymerization such as ammonium or potassium persulfate, or a redox system that typically includes an oxidant and a reducing agent. Commonly used redox initiation systems are described e.g., by A. S. Sarac in Progress in Polymer Science 24(1999), 1149-1204.
Typically, the monomers include one or more monomers selected from the group consisting of n-butyl acrylate, methyl methacrylate, styrene and 2-ethylhexyl acrylate. The initiator can be any initiator known in the art for use in emulsion polymerization such as ammonium or potassium persulfate, or a redox system that typically includes an oxidant and a reducing agent. Commonly used redox initiation systems are described e.g., by A. S. Sarac in Progress in Polymer Science 24(1999), 1149-1204.
[00120] The polymer latex binder can be produced by first preparing an initiator solution comprising the initiator and water. A monomer pre-emulsion is also prepared comprising at least a portion of the monomers to be used to form the latex polymer, one or more surfactants (emulsifiers), water, and additional additives such as NaOH. The one or more surfactants in the monomer pre-emulsion include any of the reactive polymerizable alkoxylated monomers of the present invention. The initiator solution and monomer pre-emulsion are then continuously added to the reactor over a predetermined period of time (e.g.
1.5-5 hours) to cause polymerization of the monomers and to thereby produce the latex polymer. Typically, at least a portion of the initiator solution is added to the reactor prior to adding the monomer pre-emulsion. Prior to the addition of the initiator solution and the monomer pre-emulsion, a seed latex such as a polystyrene seed latex can be added to the reactor. In addition, water, one or more surfactants, and any monomers not provided in the monomer pre-emulsion can be added to the reactor prior to adding the initiator and adding the monomer pre-emulsion. The reactor is operated at an elevated temperature at least until all the monomers are fed to produce the polymer latex binder. Once the polymer latex binder is prepared, it is typically chemically stripped thereby decreasing its residual monomer content. Typically, it is chemically stripped by continuously adding an oxidant such as a peroxide (e.g. t-butylhydroperoxide) and a reducing agent (e.g. sodium acetone bisulfite), or another redox pair such as those described by A. S. Sarac in Progress in Polymer Science 24(1999), 1149-1204, to the latex binder at an elevated temperature and for a predetermined period of time (e.g. 0.5 hours). The pH of the latex binder can then be adjusted and a biocide or other additives added after the chemical stripping step.
1.5-5 hours) to cause polymerization of the monomers and to thereby produce the latex polymer. Typically, at least a portion of the initiator solution is added to the reactor prior to adding the monomer pre-emulsion. Prior to the addition of the initiator solution and the monomer pre-emulsion, a seed latex such as a polystyrene seed latex can be added to the reactor. In addition, water, one or more surfactants, and any monomers not provided in the monomer pre-emulsion can be added to the reactor prior to adding the initiator and adding the monomer pre-emulsion. The reactor is operated at an elevated temperature at least until all the monomers are fed to produce the polymer latex binder. Once the polymer latex binder is prepared, it is typically chemically stripped thereby decreasing its residual monomer content. Typically, it is chemically stripped by continuously adding an oxidant such as a peroxide (e.g. t-butylhydroperoxide) and a reducing agent (e.g. sodium acetone bisulfite), or another redox pair such as those described by A. S. Sarac in Progress in Polymer Science 24(1999), 1149-1204, to the latex binder at an elevated temperature and for a predetermined period of time (e.g. 0.5 hours). The pH of the latex binder can then be adjusted and a biocide or other additives added after the chemical stripping step.
[00121] The aqueous coating composition is a stable fluid that can be applied to a wide variety of materials such as, for example, paper, wood, concrete, metal, glass, ceramics, plastics, plaster, and roofing substrates such as asphaltic coatings, roofing felts, foamed polyurethane insulation; or to previously painted, primed, undercoated, worn, or weathered substrates. The aqueous coating composition of the invention can be applied to the materials by a variety of techniques well known in the art such as, for example, brush, rollers, mops, air-assisted or airless spray, electrostatic spray, and the like.
[00122] Latex Polymer Compositions Comprising Surface Active (emulsifier) Compound
[00123] In another embodiment a surface active compound of structural formula IIA can be used as an emulsifier during the emulsion polymerization reaction used to make latex polymer.
OX-R
n
OX-R
n
[00124] R2 IIA
[00125] wherein B is a 5 or 6 membered cycloalkyl ring, e.g., a cyclohexyl ring, or a single ring aromatic hydrocarbon having a 6 membered ring, e.g., a benzene ring;
[00126] R1, R2 and R3 are independently selected from:
[00127] -H, tertbutyl, butyl, -CH2 -CH2 , - CH O , or - CH
[00128] with the proviso that one or none of R1, R2 and R3 is -H.
[00129] wherein, X is at least one member of the group consisting Of C21-14, C3H6, and C4H8, or wherein X is a divalent hydrocarbon radical selected from linear or branched alkylene radicals having from 2 to 8 carbon atoms; n is 1-100, for example, 3 to 80, 4 to 50, 4 to 40 or 8 to 25;
[00130] wherein R is -OH, -OCH3, -OC2H5, -OC3H7, -OC4H9, -OC5H11, -OC6H13, -Cl, -Br, -CN, Phosphonate (-PO3 M+), Phosphate (PO4 M+), Sulfate (SO4 M+), Sulfonate (SO3 M+), carboxylate (COO- M+), a nonionic group, or a quaternary ammonium ion, wherein M+ is a cation including but not limited to H+, Na+, NH4, K+ or Li+,
[00131] In one emboidment, R5 is selected from a quaternary ammonium ion:
N+ - CH3
N+ - CH3
[00132] In one embodiment, n is an integer of from 4 to 80. In one embodiment, n is an integer of from 4 to 60. In one embodiment, n is an integer of from 10 to 50. In one embodiment, n is an integer of from 10 to 25.
[00133] Typically the alkoxylated surface active compound has the formula IIB:
(oX-)-R
Rt R3
(oX-)-R
Rt R3
[00134] R2 IIB,
[00135] wherein, R, R1, R2, R3, X and n are as defined for the structure of formula IIA. If desired, the aromatic ring shown in structural formula IIB may be saturated.
[00136] More typically a surface active alkoxylated tristyrylphenol, e.g., ethoxylated tristyrylphenol, or a surface active alkoxylated tributyiphenol, e.g., ethoxylated tributylphenol can be used as an emulsifier during the emulsion polymerization reaction used to make latex polymer. The surface active ethoxylated tristyrylphenols have the structural formula IIC and the surface active ethoxylated tributylphenols have the structural formula IIC-1, respectively, as follows:
[00137] IIC, O RS
n
n
[00138] IIC-1
[00139] wherein, n is an integer of from 1 to 100 for example, 4 to 60 or 8 to 25, wherein R5 is -OH, -OCH3, -OC2H5, -OC3H7, -OC4H9, -OC5H11, -OC6H13, -Cl, -Br, -CN, Phosphonate (-P03 M+), Phosphate (P04 M+), Sulfate (S04 M+), Sulfonate (S03 M+), carboxylate (COO- M+), a nonionic group, or a quaternary ammonium ion, wherein M+ is a cation including but not limited to H+, Na+, NH4+
K+ or Li+.
K+ or Li+.
[00140] In one embodiment, R5 is selected from a quaternary ammonium ion:
N+ -CH3
N+ -CH3
[00141] In one embodiment, n is an integer of from 4 to 80. In one embodiment, n is an integer of from 4 to 60. In one embodiment, n is an integer of from 10 to 50. In one embodiment, n is an integer of from 10 to 25.
[00142] When surface active ethoxylated tristyrylphenol or ethoxylated tributylphenol is employed as an emulsifier in emulsion polymerization to form the latex polymer, the latex polymer is made from a mixture wherein the surface active emulsifier utilized is. In one embodiment, the emulsifier is added in an amount greater than 1.3% by weight of the polymer or monomers used to form the latex polymer, in an amount greater than 1.6% by weight of the polymer or monomers used to form the latex polymer, typically in an amount greater than about 2% by weight of the polymer or monomers used to form the latex polymer, more typically in an amount greater than about 4% by weight of the polymer or monomers used to form the latex polymer, and most typically in an amount greater than about 7.5% by weight of the polymer or monomers used to form the latex polymer. In another embodiment, the latex coating composition contains an emulsifier in an amount greater than about 8% by weight of the polymer or monomers used to form the latex polymer, or greater than about 10% by weight of the polymer or monomers. In another embodiment, the emulsifier is added is between about 1.6% and 7.5% by weight of the polymer or monomers used to form the latex polymer. In another embodiment, emulsifier added is between about 1.6% and 45% by weight of the polymer or monomers used to form the latex polymer, typically between about 1.6% and 35% by weight of the polymer or monomers used to form the latex polymer
[00143] If desired the ethylene oxide repeating units of the ethylene oxide chain of formula IIC or IIC-1 may be replace by the above-described -(OX)-group to form alkoxylated tristyrylphenol or alkoxylated tributylphenol.
[00144] The typical monomers from which the at least one latex polymer (sometimes referred to herein as first monomer or third monomer) is formed are described above in the section entitled "Other Monomers".
[00145] As described above, the polymer latex binder can be produced by first preparing an initiator solution comprising the initiator and water. A
monomer pre-emulsion is also prepared comprising at least a portion of the monomers to be used to form the latex polymer, one or more surfactants (emulsifiers), water, and additional additives such as NaOH. The one or more surfactants in the monomer pre-emulsion include the surface active alkoxylated compound of the invention. Thus, the alkoxylated compound is employed as an emulsifier to form a blend rather than as a reactant which copolymerizes with the other monomers which form the polymer latex binder. The initiator solution and monomer pre-emulsion are then continuously added to the reactor over a predetermined period of time (e.g. 1.5-5 hours) to cause polymerization of the monomers and to thereby produce the latex polymer. Typically, at least a portion of the initiator solution is added to the reactor prior to adding the monomer pre-emulsion.
Prior to the addition of the initiator solution and the monomer pre-emulsion, a seed latex such as a polystyrene seed latex can be added to the reactor. In addition, water, one or more surfactants, and any monomers not provided in the monomer pre-emulsion can be added to the reactor prior to adding the initiator and adding the monomer pre-emulsion. The reactor is operated at an elevated temperature at least until all the monomers are fed to produce the polymer latex binder.
Once the polymer latex binder is prepared, it is typically chemically stripped thereby decreasing its residual monomer content. Typically, it is chemically stripped by continuously adding an oxidant such as a peroxide (e.g. t-butylhydroperoxide) and a reducing agent (e.g. sodium acetone bisulfite), or another redox pair such as those described by A. S. Sarac in Progress in Polymer Science 24(1999), 1149-1204, to the latex binder at an elevated temperature and for a predetermined period of time (e.g. 0.5 hours). The pH of the latex binder can then be adjusted and a biocide or other additives added after the chemical stripping step.
monomer pre-emulsion is also prepared comprising at least a portion of the monomers to be used to form the latex polymer, one or more surfactants (emulsifiers), water, and additional additives such as NaOH. The one or more surfactants in the monomer pre-emulsion include the surface active alkoxylated compound of the invention. Thus, the alkoxylated compound is employed as an emulsifier to form a blend rather than as a reactant which copolymerizes with the other monomers which form the polymer latex binder. The initiator solution and monomer pre-emulsion are then continuously added to the reactor over a predetermined period of time (e.g. 1.5-5 hours) to cause polymerization of the monomers and to thereby produce the latex polymer. Typically, at least a portion of the initiator solution is added to the reactor prior to adding the monomer pre-emulsion.
Prior to the addition of the initiator solution and the monomer pre-emulsion, a seed latex such as a polystyrene seed latex can be added to the reactor. In addition, water, one or more surfactants, and any monomers not provided in the monomer pre-emulsion can be added to the reactor prior to adding the initiator and adding the monomer pre-emulsion. The reactor is operated at an elevated temperature at least until all the monomers are fed to produce the polymer latex binder.
Once the polymer latex binder is prepared, it is typically chemically stripped thereby decreasing its residual monomer content. Typically, it is chemically stripped by continuously adding an oxidant such as a peroxide (e.g. t-butylhydroperoxide) and a reducing agent (e.g. sodium acetone bisulfite), or another redox pair such as those described by A. S. Sarac in Progress in Polymer Science 24(1999), 1149-1204, to the latex binder at an elevated temperature and for a predetermined period of time (e.g. 0.5 hours). The pH of the latex binder can then be adjusted and a biocide or other additives added after the chemical stripping step.
[00146] The incorporation of the surface active alkoxylated compound surfactant (emulsifier) in the emulsion polymerization reaction mixture enables the coating composition to have a lower VOC content while maintaining the freeze-thaw stability of the aqueous coating composition at desirable levels.
[00147] Additive to an aqueous latex dispersion
[00148] In another embodiment the above-described surface active alkoxylated compound of structural formula IIA, IIB, IIC or IIC-1 (sometimes referred to as the freeze-thaw additive) can be used as an additive to an already formed aqueous dispersion of latex polymer. It is understood, that the freeze-thaw additive can be added any point in the production of the aqueous coating composition, including but not limited to during the emulsification step, during formulation, etc. It is also understood that the freeze-thaw additive can be post-added to the aqueous coating composition or a concentrate thereof.
[00149] This results in an aqueous composition comprising the surface active alkoxylated compound and the latex polymer. When the surface active alkoxylated compound is employed as an additive to an already formed aqueous latex dispersion, the resulting composition has alkoxylated compound additive in an amount of about 1 to 10, Typically 2 to 8 or 2 to 6, parts per 100 parts by weight of monomers used to form the latex polymer.
[00150] The typical monomers from which the latex polymer is formed are described above in the section entitled "Other Monomers" and can be copolymerized with the reactive monomers of the present invention as described above.
[00151] The present invention further includes a method of preparing a latex binder composition, comprising adding the at least one surface active alkoxylated compound surfactant (emulsifier) of structural formula IIA, IIB, IIC
and/or IIC-1 as described above to an aqueous dispersion of a latex polymer to produce the latex binder. The at least one pigment and other additives can then be mixed with the resulting latex binder to produce the aqueous coating composition in any appropriate order. The addition of the surface active alkoxylated compound of structural formula IIA, IIB, IIC or IIC-1 to the latex polymer forms a mixture having a lower VOC content while maintaining the freeze-thaw stability of the mixture at desirable levels.
and/or IIC-1 as described above to an aqueous dispersion of a latex polymer to produce the latex binder. The at least one pigment and other additives can then be mixed with the resulting latex binder to produce the aqueous coating composition in any appropriate order. The addition of the surface active alkoxylated compound of structural formula IIA, IIB, IIC or IIC-1 to the latex polymer forms a mixture having a lower VOC content while maintaining the freeze-thaw stability of the mixture at desirable levels.
[00152] In another embodiment the above-described surface active compound of structural formula IIA, IIB, IIC or IIC-1 (sometimes referred to as the freeze-thaw additive) can be used as an additive to an during formulation of paint or aqueous coating composition. Formulation is the stage at which additives are added to a base aqueous latex polymer dispersion to make it into final product such as a paint or coating. When the surface active alkoxylated compound is employed as an additive to an already formed paint or aqueous coating composition, e.g., aqueous latex coating dispersion, the resulting composition has alkoxylated compound additive typically in an amount greater than about 1.3% by weight of the polymer or monomers used to form the latex polymer, more typically in an amount greater than about 1.6% by weight of the polymer or monomers used to form the latex polymer, yet more typically in an amount greater than about 2% by weight of the polymer or monomers used to form the latex polymer, even more typically in an amount greater than about 4% by weight of the polymer or monomers used to form the latex polymer, and most typically in an amount greater than about 7.5% by weight of the polymer or monomers used to form the latex polymer. In another embodiment, the latex coating composition contains surface active alkoxylated compound in an amount between about 1.6%
and 7.5% by weight of the polymer or monomers used to form the latex polymer.
In another embodiment, the latex coating composition contains surface active alkoxylated compound in an amount between about 1.6% and 45% by weight of the polymer or monomers used to form the latex polymer, typically between about 1.6% and 35%. Pigment is a typical additive, for example, added during formulation of paint from raw aqueous latex polymer dispersion.
and 7.5% by weight of the polymer or monomers used to form the latex polymer.
In another embodiment, the latex coating composition contains surface active alkoxylated compound in an amount between about 1.6% and 45% by weight of the polymer or monomers used to form the latex polymer, typically between about 1.6% and 35%. Pigment is a typical additive, for example, added during formulation of paint from raw aqueous latex polymer dispersion.
[00153] The aqueous coating compositions of the present invention are freeze-thaw stable where the freeze-thaw additive is present in the aqueous coating composition in the amounts by weight of the polymer as described above, where the polymer can have a Tg of between about -15 C and about 12 C and a mean particle size of less than about 200 nm, or a Tg of between about -5 C
and about 5 C and a mean particle size of less than about 200 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 200 nm, or a Tg of between about -15 C and about 12 C and a mean particle size of less than about 190 nm, or a Tg of between about -5 C and about 5 C
and a mean particle size of less than about 190 nm, or a Tg of between about -C and about 0 C and a mean particle size of less than about 190 nm, or a Tg of between about -15 C and about 12 C and a mean particle size of less than about 175 nm, or a Tg of between about -5 C and about 5 C and a mean particle size of less than about 175 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 175 nm. As described above, the mean particle size is typically between about 75 nm to about 400 nm. The aqueous coating composition can be characterized by an open time of greater than about 2 minutes, an open time of greater than about 4 minutes, an open time of greater than about 6 minutes or an open time of greater than about 12 minutes.
and about 5 C and a mean particle size of less than about 200 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 200 nm, or a Tg of between about -15 C and about 12 C and a mean particle size of less than about 190 nm, or a Tg of between about -5 C and about 5 C
and a mean particle size of less than about 190 nm, or a Tg of between about -C and about 0 C and a mean particle size of less than about 190 nm, or a Tg of between about -15 C and about 12 C and a mean particle size of less than about 175 nm, or a Tg of between about -5 C and about 5 C and a mean particle size of less than about 175 nm, or a Tg of between about -5 C and about 0 C and a mean particle size of less than about 175 nm. As described above, the mean particle size is typically between about 75 nm to about 400 nm. The aqueous coating composition can be characterized by an open time of greater than about 2 minutes, an open time of greater than about 4 minutes, an open time of greater than about 6 minutes or an open time of greater than about 12 minutes.
[00154] The present invention further includes a method of preparing a paint or aqueous coating composition, comprising adding the at least one surface active alkoxylated compound of structural formula IIA, IIB, IIC and/or IIC-1 as described above during formulation of paint or aqueous coating composition comprising at least one pigment and other additives to produce the final paint or aqueous coating composition. The addition of the surface active alkoxylated compound surfactant (emulsifier) during formulation of paint or aqueous coating composition forms a coating composition having a lower VOC content while maintaining the freeze-thaw stability of the aqueous coating composition at desirable levels.
[00155] Other Additives
[00156] The aqueous coating compositions of the invention include at least one latex polymer derived from at least one monomer, for example acrylic monomers and/or the other above-described latex monomers. The aqueous coating compositions of the invention include less than 2 % by weight and typically less than 1.0% by weight of anti-freeze agents based on the total weight of the aqueous coating composition. More typically, the aqueous coating compositions are substantially free of anti-freeze agents.
[00157] The aqueous coating composition typically includes at least one pigment. The term "pigment" as used herein includes non-film-forming solids such as pigments, extenders, and fillers. The at least one pigment is typically selected from the group consisting of Ti02 (in both anastase and rutile forms), clay (aluminum silicate), CaCO3 (in both ground and precipitated forms), aluminum oxide, silicon dioxide, magnesium oxide, talc (magnesium silicate), barytes (barium sulfate), zinc oxide, zinc sulfite, sodium oxide, potassium oxide and mixtures thereof. Suitable mixtures include blends of metal oxides such as those sold under the marks MINEX (oxides of silicon, aluminum, sodium and potassium commercially available from Unimin Specialty Minerals), CELITES
(aluminum oxide and silicon dioxide commercially available from Celite Company), ATOMITES (commercially available from English China Clay International), and ATTAGELS (commercially available from Engelhard). More typically, the at least one pigment includes Ti02, CaCO3 or clay. Generally, the mean particle sizes of the pigments range from about 0.01 to about 50 microns.
For example, the Ti02 particles used in the aqueous coating composition typically have a mean particle size of from about 0.15 to about 0.40 microns.
The pigment can be added to the aqueous coating composition as a powder or in slurry form. The pigment is typically present in the aqueous coating composition in an amount from about 5 to about 50 percent by weight, more typically from about 10 to about 40 percent by weight.
(aluminum oxide and silicon dioxide commercially available from Celite Company), ATOMITES (commercially available from English China Clay International), and ATTAGELS (commercially available from Engelhard). More typically, the at least one pigment includes Ti02, CaCO3 or clay. Generally, the mean particle sizes of the pigments range from about 0.01 to about 50 microns.
For example, the Ti02 particles used in the aqueous coating composition typically have a mean particle size of from about 0.15 to about 0.40 microns.
The pigment can be added to the aqueous coating composition as a powder or in slurry form. The pigment is typically present in the aqueous coating composition in an amount from about 5 to about 50 percent by weight, more typically from about 10 to about 40 percent by weight.
[00158] The coating composition can optionally contain additives such as one or more film-forming aids or coalescing agents. Suitable firm-forming aids or coalescing agents include plasticizers and drying retarders such as high boiling point polar solvents. Other conventional coating additives such as, for example, dispersants, additional surfactants (i.e. wetting agents), rheology modifiers, defoamers, thickeners, biocides, mildewcides, colorants such as colored pigments and dyes, waxes, perfumes, co-solvents, and the like, can also be used in accordance with the invention. For example, non-ionic and/or ionic (e.g.
anionic or cationic) surfactants can be used to produce the polymer latex.
These additives are typically present in the aqueous coating composition in an amount from 0 to about 15% by weight, more typically from about 1 to about 10% by weight based on the total weight of the coating composition.
anionic or cationic) surfactants can be used to produce the polymer latex.
These additives are typically present in the aqueous coating composition in an amount from 0 to about 15% by weight, more typically from about 1 to about 10% by weight based on the total weight of the coating composition.
[00159] As mentioned above, the aqueous coating composition in some embodiments can include less than 2.0% of anti-freeze agents based on the total weight of the aqueous coating composition. Exemplary anti-freeze agents include ethylene glycol, diethylene glycol, propylene glycol, glycerol (1,2,3-trihydroxypropane), ethanol, methanol, 1-methoxy-2-propanol, 2-amino-2-methyl-1-propanol, and FTS-365 (a freeze-thaw stabilizer from Inovachem Specialty Chemicals). More typically, the aqueous coating composition includes less than 1.0% or is substantially free (e.g. includes less than 0.1 %) of anti-freeze agents.
Accordingly, the aqueous coating composition of the invention typically has a VOC level of less than about 100 g/L and more typically less than or equal to about 50 g/L. Despite the fact that the aqueous coating compositions of the invention include little or no anti-freeze agents, the compositions possess freeze-thaw stabilities at levels desirable in the art.
Accordingly, the aqueous coating composition of the invention typically has a VOC level of less than about 100 g/L and more typically less than or equal to about 50 g/L. Despite the fact that the aqueous coating compositions of the invention include little or no anti-freeze agents, the compositions possess freeze-thaw stabilities at levels desirable in the art.
[00160] For example, the aqueous coating compositions of the invention can be subjected to freeze-thaw cycles using ASTM method D2243-82 or ASTM
D2243-95 without coagulation.
D2243-95 without coagulation.
[00161] The balance of the aqueous coating composition of the invention is water. Although much of the water is present in the polymer latex dispersion and in other components of the aqueous coating composition, water is generally also added separately to the aqueous coating composition. Typically, the aqueous coating composition includes from about 10% to about 85% by weight and more typically from about 35% to about 80% by weight water. Stated differently, the total solids content of the aqueous coating composition is typically from about 15% to about 90%, more typically, from about 20% to about 65%.
[00162] The coating compositions are typically formulated such that the dried coatings comprise at least 10% by volume of dry polymer solids, and additionally 5 to 90% by volume of non-polymeric solids in the form of pigments.
The dried coatings can also include additives such as plasticizers, dispersants, surfactants, rheology modifiers, defoamers, thickeners, biocides, mildewcides, colorants, waxes, and the like, that do not evaporate upon drying of the coating composition.
The dried coatings can also include additives such as plasticizers, dispersants, surfactants, rheology modifiers, defoamers, thickeners, biocides, mildewcides, colorants, waxes, and the like, that do not evaporate upon drying of the coating composition.
[00163] In one preferred embodiment of the invention, the aqueous coating composition is a latex paint composition comprising at least one latex polymer derived from at least one acrylic monomer selected from the group consisting of acrylic acid, acrylic acid esters, methacrylic acid, and methacrylic acid esters and at least one polymerizable alkoxylated surfactant; at least one pigment and water.
As mentioned above, the at least one latex polymer can be a pure acrylic, a styrene acrylic, a vinyl acrylic or an acrylated ethylene vinyl acetate copolymer.
As mentioned above, the at least one latex polymer can be a pure acrylic, a styrene acrylic, a vinyl acrylic or an acrylated ethylene vinyl acetate copolymer.
[00164] The present invention further includes a method of preparing an aqueous coating composition by mixing together at least one latex polymer derived from at least one monomer and copolymerized and/or blended with at least one tristyrylphenol as described above, and at least one pigment.
Typically, the latex polymer is in the form of a latex polymer dispersion. The additives discussed above can be added in any suitable order to the latex polymer, the pigment, or combinations thereof, to provide these additives in the aqueous coating composition. In the case of paint formulations, the aqueous coating composition typically has a pH of from 7 to 10.
Typically, the latex polymer is in the form of a latex polymer dispersion. The additives discussed above can be added in any suitable order to the latex polymer, the pigment, or combinations thereof, to provide these additives in the aqueous coating composition. In the case of paint formulations, the aqueous coating composition typically has a pH of from 7 to 10.
[00165] The present invention will now be further described by the following non-limiting examples. As described above, the present invention may employ (I) surface active alkoxylated compounds as a surfactant (emulsifier) to be present during latex polymer formation, (II) polymerizable reactive alkoxylated monomers to form a latex comonomer, and/or (III) surface active alkoxylated compounds as an additive to an aqueous. dispersion of latex polymer or copolymer.
[00166] EXAMPLES
[00167] The following Example 1 and its subsets describe the present invention as surface active alkoxylated compounds utilized as a surfactant (emulsifier) to be present during latex polymer formation.
[00168] Example 1
[00169] Freeze Thaw Stability Study - Example 1 compares a control with compositions of the present invention, which incorporate various levels of TSP
-EO and 1% MAA (methacrylic acid). TSP - EO is a surface active ethoxylated tristyrylphenol according to the above-listed structural formula IIC in which the R
group is H.
-EO and 1% MAA (methacrylic acid). TSP - EO is a surface active ethoxylated tristyrylphenol according to the above-listed structural formula IIC in which the R
group is H.
[00170] Sample 1 of the present invention with 2% TSP - EO, 1 % MAA
(methacrylic acid); Sample 2 of the present invention with 4% TSP - EO, 1 %
MAA; and Sample 3 of the present invention with 6% TSP - EO, 1 % MAA were made. TABLE 1 shows the ingredients of Sample 2 which is an embodiment of the present invention with 4% TSP - EO, 1 % MAA.
(methacrylic acid); Sample 2 of the present invention with 4% TSP - EO, 1 %
MAA; and Sample 3 of the present invention with 6% TSP - EO, 1 % MAA were made. TABLE 1 shows the ingredients of Sample 2 which is an embodiment of the present invention with 4% TSP - EO, 1 % MAA.
[00171]
Recipe: Ingredient weight % BOTM
(grams) Kettle Charge Deionized Water 200.00 Monomer Emulsion Deionized Water 176.25 Alkyl sulfate surfactant 18.75 1.50 Non-ionic surfactant 5.00 0.50 TSP - EO 20.00 4.00 Meth lmethac late (MMA) 200.00 40.00 but lac late (BA) 295.00 59.00 (methyl acrylic acid) MAA 5.00 1.00 Initiator Solution Deionized Water 98.00 Ammonium Persulfate 2.00 0.40 Total 1020.00 106.40 Total 1020.00 Theoretical % Solids =
Recipe: Ingredient weight % BOTM
(grams) Kettle Charge Deionized Water 200.00 Monomer Emulsion Deionized Water 176.25 Alkyl sulfate surfactant 18.75 1.50 Non-ionic surfactant 5.00 0.50 TSP - EO 20.00 4.00 Meth lmethac late (MMA) 200.00 40.00 but lac late (BA) 295.00 59.00 (methyl acrylic acid) MAA 5.00 1.00 Initiator Solution Deionized Water 98.00 Ammonium Persulfate 2.00 0.40 Total 1020.00 106.40 Total 1020.00 Theoretical % Solids =
[00172] "BOTM" is an abbreviation for "Based On Total Monomer." The monomer emulsion contains typical monomers for making latex. As mentioned above, TSP - EO contains a surface active tristyrylphenol with from about 10 to about 50 ethylene oxide groups in its alkoylate chain according to the above-listed structural formula IIC in which the R group is H. RHODACAL A-246/L and ABEX are emulsifiers available from Rhodia Inc., Cranbury, NJ
[00173] TABLE 2 shows the ingredients employed in a control tested in this example.
CONTROL INGREDIENTS
Recipe: Ingredient weight (g) % BOTM
Kettle Charge Deionized Water 320.00 Monomer Emulsion Deionized Water 282.00 Alkyl sulfate surfactant 30.00 1.50 Non-ionic surfactant 8.00 0.50 Methylmethacrylate 320.00 40.00 (MMA) but lac late (BA) 472.00 59.00 (methyl acrylic acid) 8.00 1.00 MAA
Initiator Solution Deionized Water 156.80 Ammonium Persulfate 3.20 0.40 Total 1600.00 102.40 Total Theoretical %Solids =
CONTROL INGREDIENTS
Recipe: Ingredient weight (g) % BOTM
Kettle Charge Deionized Water 320.00 Monomer Emulsion Deionized Water 282.00 Alkyl sulfate surfactant 30.00 1.50 Non-ionic surfactant 8.00 0.50 Methylmethacrylate 320.00 40.00 (MMA) but lac late (BA) 472.00 59.00 (methyl acrylic acid) 8.00 1.00 MAA
Initiator Solution Deionized Water 156.80 Ammonium Persulfate 3.20 0.40 Total 1600.00 102.40 Total Theoretical %Solids =
[00174] PROCEDURE: The control and the Sample 1, 2 and 3 ingredients were respectively each employed in an emulsion polymerization reaction procedure as follows:
[00175] 1. Heat kettle charge to about 80 C while purging with N2.
Maintain N2 blanket throughout run.
Maintain N2 blanket throughout run.
[00176] 2. Prepare Monomer emulsion and Initiator solution based on the above described recipe.
[00177] 3. At about 80 C add Initiator solution and Monomer emulsion to the kettle.
[00178] 4. Hold at about 80 C for about 10-20 minutes.
[00179] 5. Slowly add the remainder of the Monomer emulsion and Initiator solution over 3 hours while maintaining the reaction temperature at about 80 1 C.
[00180] 6. After addition of the Monomer emulsion and Initiator solution is completed, the reaction mixture temperature was heated to about 85 C and held over 30 minutes.
[00181] 7. Cool reactor contents to below about 30 C. Adjust the pH of final reaction to 8-9.
[00182] 8. Filter the batch through a 100 mesh filter and store in a closed container for characterization.
[00183] Sample 1 contained 4% TSP - EO. The procedure was repeated for 2% TSP - EO and 6% TSP - EO samples that were the same as the 4% TSP -EO sample except for the amount of TSP - EO.
[00184] TABLE 3 shows the results of the control, the 2% TSP - EO sample (Sample 1), the above-described 4% TSP - EO sample (Sample 2), and the 6%
TSP - EO sample (Sample 3). The freeze-thaw stability of polymer dispersions and formulated paints was measured based on ASTM standard test Method D2243-95. The latexes or formulated paints are tested using a half pint of sample. The sample was kept in a freezer at 0 F (-18 C) over 17 hours and then taken out from the freezer and allowed to thaw for 7 hours at room temperature.
The freeze-thaw cycles were continued until the latex or paint coagulated, or to a maximum of five (5) cycles.
2% 4% 6%
TSP - EO TSP - EO TSP - EO
Control (Sample 1) (Sample 2) (Sample 3) 1. Coagulum (based on total latex) 0.5 17 0.5 0.5 2.pH of aqueous latex dispersion after neutralization 8.86 8.83 8.9 8.81 3. Latex Solid in dispersion, % 50.78 49.94 51.1 51.6 4. Brookfield Viscosity of aqueous latex polymer dispersion Spindle/ LV3/ LVT LV3/ LV3/ LV3/
Instrument Used Model LVT Model LVT Model LVT Model at 60 rpm (cps) 100 90 70 70 5. Particle Size Weight Average 180.6 172.8 164.2 156.3 Std. Dev. % 11.73 6.73 9.8 9.9 6. Freeze-Thaw Stability Cyclel (cps) gelled 400 600 1560 Cycle 2 520 680 1500 Cycle 3 500 580 1300
TSP - EO sample (Sample 3). The freeze-thaw stability of polymer dispersions and formulated paints was measured based on ASTM standard test Method D2243-95. The latexes or formulated paints are tested using a half pint of sample. The sample was kept in a freezer at 0 F (-18 C) over 17 hours and then taken out from the freezer and allowed to thaw for 7 hours at room temperature.
The freeze-thaw cycles were continued until the latex or paint coagulated, or to a maximum of five (5) cycles.
2% 4% 6%
TSP - EO TSP - EO TSP - EO
Control (Sample 1) (Sample 2) (Sample 3) 1. Coagulum (based on total latex) 0.5 17 0.5 0.5 2.pH of aqueous latex dispersion after neutralization 8.86 8.83 8.9 8.81 3. Latex Solid in dispersion, % 50.78 49.94 51.1 51.6 4. Brookfield Viscosity of aqueous latex polymer dispersion Spindle/ LV3/ LVT LV3/ LV3/ LV3/
Instrument Used Model LVT Model LVT Model LVT Model at 60 rpm (cps) 100 90 70 70 5. Particle Size Weight Average 180.6 172.8 164.2 156.3 Std. Dev. % 11.73 6.73 9.8 9.9 6. Freeze-Thaw Stability Cyclel (cps) gelled 400 600 1560 Cycle 2 520 680 1500 Cycle 3 500 580 1300
[00185] TABLE 3 shows the additive of the present invention prevented gelling at conditions which gelled the control. Coagulum particles are formed as a byproduct of making latex. The Tg of the latex, as measured using the DSC
method as generally known in the art, was 3.63 C.
method as generally known in the art, was 3.63 C.
[00186] Example 1-1
[00187] The above-described procedure was repeated with a variety of anionic or nonionic ethoxylated tristerylphenolic (TSP) compounds having from about 6 ethylene oxide groups to about 60 ethylene oxide groups. TABLE 4 presents the results of these examples.
[00188]
TABLE 4:
Effects of Additives on Freeze-Thaw Stability of Water-Borne Paints2 Freeze-Thaw Stability Viscosit (KU)' Starting 2 3 4 5 Additives Viscosity__ 1 cycle cycles cycles cycles cycles TSP-EO #1 102.4 103.8 104.3 104 104 105.4 TSP-EO #2 98.3 101.9 102.2 101.2 100.2 101.3 TSP-EO #3 82.9 86.6 88.8 89.4 90.4 91.5 TSP-EO #4 78 88.3 90.2 91.6 93.3 101.4 TSP-EO #5 78.4 82 86.4 86 85.4 87.1 TSP-EO #6 80.8 91.9 95.1 96.2 96.5 97.6 Ethoxylated Failed non I henol3 95.5 (gelled) Control (Low VOC
Commercial Failed Paint) 121.1 (gelled) Notes:
1. Additive loading level: 1.0 Wt% of total paint weight.
2. Water-borne commercial paint:
Weight per Gallon: 10.24 pounds per gallon;
pH: 8.67;
VOC: < 50 /L;
Gloss at 60 degrees: 52.
3. Non I henol moiety attached to 9EO
TABLE 4:
Effects of Additives on Freeze-Thaw Stability of Water-Borne Paints2 Freeze-Thaw Stability Viscosit (KU)' Starting 2 3 4 5 Additives Viscosity__ 1 cycle cycles cycles cycles cycles TSP-EO #1 102.4 103.8 104.3 104 104 105.4 TSP-EO #2 98.3 101.9 102.2 101.2 100.2 101.3 TSP-EO #3 82.9 86.6 88.8 89.4 90.4 91.5 TSP-EO #4 78 88.3 90.2 91.6 93.3 101.4 TSP-EO #5 78.4 82 86.4 86 85.4 87.1 TSP-EO #6 80.8 91.9 95.1 96.2 96.5 97.6 Ethoxylated Failed non I henol3 95.5 (gelled) Control (Low VOC
Commercial Failed Paint) 121.1 (gelled) Notes:
1. Additive loading level: 1.0 Wt% of total paint weight.
2. Water-borne commercial paint:
Weight per Gallon: 10.24 pounds per gallon;
pH: 8.67;
VOC: < 50 /L;
Gloss at 60 degrees: 52.
3. Non I henol moiety attached to 9EO
[00189] Example 2 illustrates comparative examples of the present invention as against the disclosure of International Publication Number WO
2007/117512 (hereinafter sometimes referred to as the "`512 Application" or "Stepan").
2007/117512 (hereinafter sometimes referred to as the "`512 Application" or "Stepan").
[00190] Example 2
[00191] The seed latex according to the `512 Application (p.20) was prepared:
[00192] Seed Latex Preparation using Sodium Lauryl Sulfate (SLS) Formulas:
Water 50 Sulfate*: (29.5) 2.44 Monomers:
Styrene 7.2 MMA 12.24 BA 15.84 AA 0.72 Total 100 Initiator Solution Ammonium Persulfate 0.26 Water 14
Water 50 Sulfate*: (29.5) 2.44 Monomers:
Styrene 7.2 MMA 12.24 BA 15.84 AA 0.72 Total 100 Initiator Solution Ammonium Persulfate 0.26 Water 14
[00193]
[00194] Procedure: 1. Add 150 water and 7.32g surfactant (SLS) to the kettle and heat to - 83oC. 2. Add 42.78 g initiator solution. 3. Add 108 monomer mixture to kettle and hold at -83oC over 2-3 hours. 4. Measure the particle size during emulsion polymerization process. 5. Cool to room temperature and keep the seed latex for future usage. The active wt% of the seed latex was 36 wt%.
[00195] Tables 5 and 6 illustrate emulsion polymerization of a styrene-acrylic latex polymer using SLS (control) and using SLS in combination with a TSP having from about 10 to 40 ethylene oxide groups as surfactant emulsifiers, respectively.
Styrene-Acrylic Latex Polymer - Sodium Lauryl Sulfate (Control) Recipe: Ingredient weight (g) % BOTM
Kettle Charge Deionized Water 220.00 NaHCO3 solution 25.00 Styrene-Acrylic Seed 30.00 Monomer Emulsion Deionized Water 150.00 Sodium Lauryl Sulfate 11.19 0.65 TSP 0 0.00 Styrene 100.00 20.00 M MA 170.00 34.00 BA 220.00 44.00 AA 10.00 2.00 Initiator Solution Deionized Water 95.50 Ammonium Persulfate 3.50 0.70 NaHCO3 Solution NaHCO3 Solution 125.00 Total 1160.19 Total 1160.19 Theoretical %Solids =
Scale-up factor =
Seed = ME 30.00 IS 20.00
Styrene-Acrylic Latex Polymer - Sodium Lauryl Sulfate (Control) Recipe: Ingredient weight (g) % BOTM
Kettle Charge Deionized Water 220.00 NaHCO3 solution 25.00 Styrene-Acrylic Seed 30.00 Monomer Emulsion Deionized Water 150.00 Sodium Lauryl Sulfate 11.19 0.65 TSP 0 0.00 Styrene 100.00 20.00 M MA 170.00 34.00 BA 220.00 44.00 AA 10.00 2.00 Initiator Solution Deionized Water 95.50 Ammonium Persulfate 3.50 0.70 NaHCO3 Solution NaHCO3 Solution 125.00 Total 1160.19 Total 1160.19 Theoretical %Solids =
Scale-up factor =
Seed = ME 30.00 IS 20.00
[00196] Table 6 Styrene-Acrylic Latex Polymer - Sodium Lauryl Sulfate & TSP -EO
Recipe: Ingredient weight (g) % BOTM
Kettle Charge Deionized Water 220.00 NaHCO3 solution 25.00 Styrene-Acrylic Seed 30.00 Monomer Emulsion Deionized Water 150.00 Sodium Lauryl Sulfate 11.19 0.65 TSP - EO 6.5 1.3 Styrene 100.00 20.00 MMA 170.00 34.00 BA 220.00 44.00 AA 10.00 2.00 Initiator Solution Deionized Water 95.50 Ammonium Persulfate 3.50 0.70 NaHCO3 Solution NaHCO3 Solution 125.00 Total 1166.69 Total 1166.69 Theoretical %Solids =
Scale-up factor =
Seed = ME 30.00 IS 20.00
Recipe: Ingredient weight (g) % BOTM
Kettle Charge Deionized Water 220.00 NaHCO3 solution 25.00 Styrene-Acrylic Seed 30.00 Monomer Emulsion Deionized Water 150.00 Sodium Lauryl Sulfate 11.19 0.65 TSP - EO 6.5 1.3 Styrene 100.00 20.00 MMA 170.00 34.00 BA 220.00 44.00 AA 10.00 2.00 Initiator Solution Deionized Water 95.50 Ammonium Persulfate 3.50 0.70 NaHCO3 Solution NaHCO3 Solution 125.00 Total 1166.69 Total 1166.69 Theoretical %Solids =
Scale-up factor =
Seed = ME 30.00 IS 20.00
[00197]
[00198] PROCEDURE (for Tables 5 and 6):
[00199] 1) Charge water and 25g of NaHCO3 solution and 30 g seed latex to a kettle and heat the kettle to about 83 C at a stirring rate of 150 rpm while purging with N2. Maintain N2 blanket throughout run. 2) Prepare monomer emulsion and initiator solution based on the recipe. 3) At -83 C add 20.2%
Initiator solution (20.Og) and hold for 8 minutes. 4) Feed remainder of Monomer emulsion over about 180 minutes and maintain the reaction temperature at about 83 1 oC. 5) After 10 minutes of monomers additions, 79 g solution of ammonium persulfate solution with 125.Og NaHCO3 solution was fed for 180 minutes. 6) After addition, heat the reaction temperature to 83 C and hold over 60 minutes at 83 1 C. 7) Cool batch to below 30 C, and adjust pH to 8.5 0.1 with concentrated (28%) ammonium hydroxide solution. 8) Filter the batch through a 100 mesh filter and store in a closed container for characterization.
Initiator solution (20.Og) and hold for 8 minutes. 4) Feed remainder of Monomer emulsion over about 180 minutes and maintain the reaction temperature at about 83 1 oC. 5) After 10 minutes of monomers additions, 79 g solution of ammonium persulfate solution with 125.Og NaHCO3 solution was fed for 180 minutes. 6) After addition, heat the reaction temperature to 83 C and hold over 60 minutes at 83 1 C. 7) Cool batch to below 30 C, and adjust pH to 8.5 0.1 with concentrated (28%) ammonium hydroxide solution. 8) Filter the batch through a 100 mesh filter and store in a closed container for characterization.
[00200] Table 7 - Resulting Properties of styrene-acrylic latex polymer using SLS (control) and using SLS in combination with a TSP as surfactant emulsifiers Control - Polymer with Sodium Lauryl Sulfate (SLS) Polymer with SLS + TSP-EO
PROPERTIES:
%Coa ulum 0.08 0.21 %Solids 44.27 45.33 %Conversion 98.16 100 H init 5.10 5.05 pH (adjust) 8.50 8.50 Particle size (nm) 200.7 200 Viscosity (cps) 100 80 LV3, 60 F/T cycles Yes Yes
PROPERTIES:
%Coa ulum 0.08 0.21 %Solids 44.27 45.33 %Conversion 98.16 100 H init 5.10 5.05 pH (adjust) 8.50 8.50 Particle size (nm) 200.7 200 Viscosity (cps) 100 80 LV3, 60 F/T cycles Yes Yes
[00201] Table 8 - Freeze-Thaw Stability of latex binder using SLS (control) and TDA Sodium Sulfate (control), as compared to using SLS in combination with a TSP as surfactant emulsifiers and using TDA Sodium Sulfate in combination with a TSP as surfactant emulsifiers, respectively.
Table 8 - Freeze-Thaw Stability of Latex Latex Binders Viscosity (cPs, Brookfield) (LV4, 60rpm) Initial I cycle 2 cycles 3 cycles 4 cycles 5 cycles Vis.
Latex Binder with Latex Binder with Latex Binder with TDA sodium Sulfate 150 800 650 700 600 510 Latex Binder with TDA sodium 150 600 500 550 550 500 Sulfate/TSP-EO
Table 8 - Freeze-Thaw Stability of Latex Latex Binders Viscosity (cPs, Brookfield) (LV4, 60rpm) Initial I cycle 2 cycles 3 cycles 4 cycles 5 cycles Vis.
Latex Binder with Latex Binder with Latex Binder with TDA sodium Sulfate 150 800 650 700 600 510 Latex Binder with TDA sodium 150 600 500 550 550 500 Sulfate/TSP-EO
[00202] Referring to Tables 7 and 8, the properties of the latex polymer dispersions prepared in Table 5 (Sodium Lauryl Sulfate used as the emulsifying surfactant) and Table 6 (Sodium Lauryl Sulfate and TSP used as emulsifying surfactants) both exhibit freeze thaw (F/T) stability. Using the DSC method generally known in the art, the measured Tg of the latex dispersion of Tables and 6 ranged from about 24 C - 27 C.
[00203] Referring to FIG. 1, the Tg of various latex polymers prepared under the `512 application are illustrated: (1) emulsion polymerization of the latex polymer using SLS, which has a measured Tg of about 26.5 C; (2) emulsion polymerization of the latex polymer using SLS in combination with a TSP - EO
as surfactant emulsifiers, which has a measured Tg of about 25.3 C; (3) emulsion polymerization of the latex polymer using TDA Sodium Sulfate, which has a measured Tg of about 24.5 C; and (4) emulsion polymerization of the latex polymer using TDA Sodium Sulfate in combination with a TSP - EO as surfactant emulsifiers, which has a measured Tg of about 26.5 C.
as surfactant emulsifiers, which has a measured Tg of about 25.3 C; (3) emulsion polymerization of the latex polymer using TDA Sodium Sulfate, which has a measured Tg of about 24.5 C; and (4) emulsion polymerization of the latex polymer using TDA Sodium Sulfate in combination with a TSP - EO as surfactant emulsifiers, which has a measured Tg of about 26.5 C.
[00204] The following Example 3 and its subsets describe the present invention as polymerizable reactive alkoxylated monomers (reactive monomers) used to form a latex comonomer or polymer.
[00205] Example 3
[00206] The following examples relate to use of tristyrylphenol (TSP) ethoxylates and tributylphenol (TBP) ethoxylates utilized as reactive monomers in preparing latex.
[00207] Example 3-1 - Preparing latex polymers
[00208] Referring to Table 9, a control latex polymer was prepared from emulsion polymerization without the use of TSP/TBP ethoxylated monomers.
Referring to Table 10, a latex polymer was prepared from emulsion polymerization using TSP ethoxylated monomers and TBP ethoxylated monomers of the present invention. The procedure for preparing the latex polymer was as follows:
Referring to Table 10, a latex polymer was prepared from emulsion polymerization using TSP ethoxylated monomers and TBP ethoxylated monomers of the present invention. The procedure for preparing the latex polymer was as follows:
[00209] Heat kettle charge to while purging with N2. Maintain N2 blanket throughout run. Prepare monomer emulsion and initiator solution. Add initiator solution and monomer emulsion. Hold at steady temperature and feed remainder of monomer emulsion and Initiator solution. Cool to reactor below 30 C and then filter the batch through cheesecloth.
[00210] Table 9 Emulsion Polymerization without TSP/TBP ethoxylated monomer Recipe: Ingredient weight (g) % BOTM
Kettle Charge Deionized Water 320.00 Monomer Emulsion Deionized Water 282.00 Alkyl sulfate surfactant 30.00 1.50 Non-ionic surfactant 8.00 0.5 M MA 320.00 40.00 BA 472.00 59.00 MAA 8.00 1.00 Initiator Solution Deionized Water 156.80 Ammonium Persulfate 3.20 0.40 Chaser Solution Total 1600.00 Total 1600.00 Theoretical %Solids =
Scale-up factor =
Seed = ME 56.00 IS 40.00
Kettle Charge Deionized Water 320.00 Monomer Emulsion Deionized Water 282.00 Alkyl sulfate surfactant 30.00 1.50 Non-ionic surfactant 8.00 0.5 M MA 320.00 40.00 BA 472.00 59.00 MAA 8.00 1.00 Initiator Solution Deionized Water 156.80 Ammonium Persulfate 3.20 0.40 Chaser Solution Total 1600.00 Total 1600.00 Theoretical %Solids =
Scale-up factor =
Seed = ME 56.00 IS 40.00
[00211] Table 10 Emulsion Polymerization utilizing TSP ethoxylated monomer Recipe: Ingredient weight (g) % BOTM
Kettle Charge Deionized Water 200.00 Monomer Emulsion Deionized Water 176.25 Alkyl sulfate surfactant 18.75 1.50 Non-ionic surfactant 5.00 0.50 TSP-EO 16.60 2.00 MMA 200.00 40.00 BA 295.00 59.00 MAA 1.68 1.00 Initiator Solution Deionized Water 98.00 Ammonium Persulfate 2.00 0.40 Chaser Solution Total 1013.28 Total 1013.28 Theoretical %Solids =
Scale-up factor =
Seed = ME 35.66 IS 25.00
Kettle Charge Deionized Water 200.00 Monomer Emulsion Deionized Water 176.25 Alkyl sulfate surfactant 18.75 1.50 Non-ionic surfactant 5.00 0.50 TSP-EO 16.60 2.00 MMA 200.00 40.00 BA 295.00 59.00 MAA 1.68 1.00 Initiator Solution Deionized Water 98.00 Ammonium Persulfate 2.00 0.40 Chaser Solution Total 1013.28 Total 1013.28 Theoretical %Solids =
Scale-up factor =
Seed = ME 35.66 IS 25.00
[00212] Example 3-2 - Paint formulations
[00213] Tables 11, 12 and 13 illustrate paint formulations utilizing a commercially low VOC available paint whose polymer latex is believed to have a Tg of about 2.4 C and a D50 of between 130-160, a similar formulation utilizing pure acrylic as the latex polymer, and a similar formulation utilizing the synthesized latexes of the present invention as the latex polymer, respectively.
[00214] Table 11 - Paint Formulations Table 11 - Paint Formulation Control - Commercially available Low VOC
paint (Comm. Paint) Raw materials Pounds Gallons Weight Percent Pigment Grind Water 80 9.62 9.560 Ethylene Glycol 0 0 0 AMP-95 1 0.13 0.10 Rhodoline 286N 8 0.91 0.76 Antarox BL-225 4 0.48 0.38 Rhodoline 643 0.5 0.06 0.05 Atta el50 5 0.253 0.48 Titanium dioxide Tiona 595 230 7 22.0 Water 89.6 10.77 6.64 Sub Total 418.1 29.22 Letdown Comm. latex (undisclosed) 480 54.2 45.9 Texanol 0 0 0 Rhodoline 643 2.5 0.41 0.29 Aguaflow NHS310 28 3.23 2.68 Water 95 11.42 9.1 Ac solTM SCT-275 14 1.634 0.67 Polyphase 663 4 0.418 0.38 Total 1041.6 100.53 100.0
paint (Comm. Paint) Raw materials Pounds Gallons Weight Percent Pigment Grind Water 80 9.62 9.560 Ethylene Glycol 0 0 0 AMP-95 1 0.13 0.10 Rhodoline 286N 8 0.91 0.76 Antarox BL-225 4 0.48 0.38 Rhodoline 643 0.5 0.06 0.05 Atta el50 5 0.253 0.48 Titanium dioxide Tiona 595 230 7 22.0 Water 89.6 10.77 6.64 Sub Total 418.1 29.22 Letdown Comm. latex (undisclosed) 480 54.2 45.9 Texanol 0 0 0 Rhodoline 643 2.5 0.41 0.29 Aguaflow NHS310 28 3.23 2.68 Water 95 11.42 9.1 Ac solTM SCT-275 14 1.634 0.67 Polyphase 663 4 0.418 0.38 Total 1041.6 100.53 100.0
[00215] Table 12 Table 12 - Paint Formulation Control - Pure Acrylic Raw materials Pounds Gallons Weight Percent Pigment Grind Water 80 9.62 9.560 Ethylene Glycol 0 0 0.00 AMP-95 1 0.13 0.10 Rhodoline 286N 8 0.91 0.76 Antarox BL-225 4 0.48 0.38 Rhodoline 643 0.5 0.06 0.05 Atta el50 5 0.253 0.48 Titanium dioxide Tiona 595 230 7 22.0 Water 89.6 10.77 6.64 Sub Total 418.1 29.22 Letdown Pure Acrylic - Control 480 54.2 45.9 Texanol 0 0 0.0 Rhodoline 643 2.5 0.41 0.29 Aguaflow NHS310 28 3.23 2.68 Water 95 11.42 9.1 Ac solTM SCT-275 14 1.634 0.67 Polyphase 663 4 0.418 0.38 Total 1041.6 100.53 100.0
[00216] Table 13 - Paint Formulation with synthesized latex including TSP
ethoxylate unit.
Table 13 - Paint Formulation with synthesized latex including TSP ethoxylate unit Raw materials Pounds Gallons Weight Percent Pigment Grind Water 80 9.62 9.560 Ethylene Glycol 0 0 0.00 AMP-95 1 0.13 0.10 Rhodoline 286N 8 0.91 0.76 Antarox BL-225 4 0.48 0.38 Rhodoline 643 0.5 0.06 0.05 Atta e150 5 0.253 0.48 Titanium dioxide Tiona 595 230 7 22.0 Water 89.6 10.77 6.64 Sub Total 418.1 29.22 Letdown Latex -2% - TSP/TBP
reactive monomer 480 54.2 45.9 Texanol 0 0 0.0 Rhodoline 643 2.5 0.41 0.29 A uaflow NHS310 28 3.23 2.68 Water 95 11.42 9.1 Ac solTM SCT-275 14 1.634 0.67 Polyphase 663 4 0.418 0.38 Total 1041.6 100.53 100.0
ethoxylate unit.
Table 13 - Paint Formulation with synthesized latex including TSP ethoxylate unit Raw materials Pounds Gallons Weight Percent Pigment Grind Water 80 9.62 9.560 Ethylene Glycol 0 0 0.00 AMP-95 1 0.13 0.10 Rhodoline 286N 8 0.91 0.76 Antarox BL-225 4 0.48 0.38 Rhodoline 643 0.5 0.06 0.05 Atta e150 5 0.253 0.48 Titanium dioxide Tiona 595 230 7 22.0 Water 89.6 10.77 6.64 Sub Total 418.1 29.22 Letdown Latex -2% - TSP/TBP
reactive monomer 480 54.2 45.9 Texanol 0 0 0.0 Rhodoline 643 2.5 0.41 0.29 A uaflow NHS310 28 3.23 2.68 Water 95 11.42 9.1 Ac solTM SCT-275 14 1.634 0.67 Polyphase 663 4 0.418 0.38 Total 1041.6 100.53 100.0
[00217] Table 14 illustrates the resulting paint properties of the above referenced paint formulations using low Tg commercial latex, pure acrylic latex, and varying TSP/TBP ethoxylated monomers having ethoxylate groups from about 3 to 80.
R- R- R- R- R- R-Comm. Pure R-TSP R-TBP R-TBP
Table 14 Latex* Acrylic TSP TSP TSP TSP TSP TSP #7 #1 #2 #1 #2 #3 #4 #5 #6 Viscosity:
Initial KU 106.8 103 101.5 100.3 97 84.5 80.1 95.6 86.6 98.6 88.4 Initial, ICI 1.2 1.4 1.6 1.5 1.6 1.3 1.4 1.3 1.4 1.7 1.4 Viscosity, equilibrium KU 113.4 106.3 103.8 103.1 99.4 88.7 82.3 93.6 87.1 101 93.8 ICI 1.3 1.4 1.6 1.6 1.4 1.2 1.4 1.4 1.3 1.6 1.2 pH 8.3 8.55 8.47 8.6 8.42 8.51 8.55 8.54 8.44 8.55 8.45 W PG 10.42 10.36 10.39 10.4 10.38 10.28 10.34 10.32 9.88 10.27 10.35 Gloss 20.1 21.2/ 19.2/ 21.7/ 20.3/ 20.8/ 21.3/ 12.3/ 2.9/ 16.5/ 17.0/
20/60/85 /57.9/ 60.3/ 56.9/ 60.8/ 59.2/ 59/ 59.9/ 52.6/ 21.5/ 54.5/ 54.8/
88.4 89.4 86.4 89.6 87.3 87.8 88.4 81.6 40.6 87.6 87.5
R- R- R- R- R- R-Comm. Pure R-TSP R-TBP R-TBP
Table 14 Latex* Acrylic TSP TSP TSP TSP TSP TSP #7 #1 #2 #1 #2 #3 #4 #5 #6 Viscosity:
Initial KU 106.8 103 101.5 100.3 97 84.5 80.1 95.6 86.6 98.6 88.4 Initial, ICI 1.2 1.4 1.6 1.5 1.6 1.3 1.4 1.3 1.4 1.7 1.4 Viscosity, equilibrium KU 113.4 106.3 103.8 103.1 99.4 88.7 82.3 93.6 87.1 101 93.8 ICI 1.3 1.4 1.6 1.6 1.4 1.2 1.4 1.4 1.3 1.6 1.2 pH 8.3 8.55 8.47 8.6 8.42 8.51 8.55 8.54 8.44 8.55 8.45 W PG 10.42 10.36 10.39 10.4 10.38 10.28 10.34 10.32 9.88 10.27 10.35 Gloss 20.1 21.2/ 19.2/ 21.7/ 20.3/ 20.8/ 21.3/ 12.3/ 2.9/ 16.5/ 17.0/
20/60/85 /57.9/ 60.3/ 56.9/ 60.8/ 59.2/ 59/ 59.9/ 52.6/ 21.5/ 54.5/ 54.8/
88.4 89.4 86.4 89.6 87.3 87.8 88.4 81.6 40.6 87.6 87.5
[00218] The paint formulations utilizing Comm. Latex and Pure Acrylic latex gelled only after one F/T cycle as opposed to formulations using latexes incorporating several TSP/TBP ethoxylated monomers, which exhibited F/T
stability.
stability.
[00219] Example 3-3
[00220] The properties of paint formulations using a control latex (pure acrylic), a commercially-available low Tg latex, and the TSP reactive monomers of the present invention were tested. It is observed that the resulting paint formulations wherein the above-referenced latexes varied produced comparable properties aside from F/T stability. Accordingly, the imparting of F/T
stability using the reactive TSP and TBP monomer ethoxylates into latex polymers of the present invention does not detract from other desirable properties of the paint formulation (10 being the highest to 1 being the lowest).
stability using the reactive TSP and TBP monomer ethoxylates into latex polymers of the present invention does not detract from other desirable properties of the paint formulation (10 being the highest to 1 being the lowest).
[00221] Table 15 - paint properties Benchmark - Low Control - Pure VOC commercial R-TSP-EO #1 R-TSP-EO #2 Acrylic paint (Comm.
Latex) WPG 9.35 10.03 9.6 9.37 H 8.55 8.3 8.54 8.49 Viscosity 77 109 94 77 ICI 1.00 1.60 1.05 1.05 Gloss - 16.5/54.3/90.7 21.2/60.6/92.9 17.2/56.4/86.4 15.3/55.5/95.3 @20/60/85 Reflectance 93.9 94 93.5 93.8 Contrast Ratio 0.972 0.977 0.972 0.971 Low Temp. Film Formation, 40 F
Sealed 10 10 10 10 Unsealed 10 10 10 10 Surfactant Leaching 24 hours D 8 7 7 8 3 Days D 8 7 7 8 7Days D 9 7 7 8 Foam Dab Test 9 9 9 9 Leveling - ASTM 10 8 9 8 Block Resistance, Dry Adhesion, 7 Days Aluminum OB 2B 1B 2B
Alkyd 5B 5B 5B 4B
Open Time, minutes Color Acceptance E Colorant 9 10 8 10 B Colorant 9 10 7 10
Latex) WPG 9.35 10.03 9.6 9.37 H 8.55 8.3 8.54 8.49 Viscosity 77 109 94 77 ICI 1.00 1.60 1.05 1.05 Gloss - 16.5/54.3/90.7 21.2/60.6/92.9 17.2/56.4/86.4 15.3/55.5/95.3 @20/60/85 Reflectance 93.9 94 93.5 93.8 Contrast Ratio 0.972 0.977 0.972 0.971 Low Temp. Film Formation, 40 F
Sealed 10 10 10 10 Unsealed 10 10 10 10 Surfactant Leaching 24 hours D 8 7 7 8 3 Days D 8 7 7 8 7Days D 9 7 7 8 Foam Dab Test 9 9 9 9 Leveling - ASTM 10 8 9 8 Block Resistance, Dry Adhesion, 7 Days Aluminum OB 2B 1B 2B
Alkyd 5B 5B 5B 4B
Open Time, minutes Color Acceptance E Colorant 9 10 8 10 B Colorant 9 10 7 10
[00222]
[00223] Table 16 - Scrub resistance of the present invention as compared to the control (pure acrylic latex).
Scrub Resistance R-TSP-EO #1 Control R-TSP-EO #2 Control Runl 838 1393 978 1206 Run 2 818 1370 1086 1337
Scrub Resistance R-TSP-EO #1 Control R-TSP-EO #2 Control Runl 838 1393 978 1206 Run 2 818 1370 1086 1337
[00224] Table 17 - Scrub resistance of the present invention as compared to a low VOC commercially- available paint formulation (Comm. Latex).
Scrub Resistance R-TSP-EO #1 Comm. Paint R-TSP-EO #2 Comm. Paint Runl 736 2218 1078 1897 Run 2 838 2115 943 1930
Scrub Resistance R-TSP-EO #1 Comm. Paint R-TSP-EO #2 Comm. Paint Runl 736 2218 1078 1897 Run 2 838 2115 943 1930
[00225] Table 18 - stain removal properties of the present invention as compared to the control (pure acrylic latex).
Stain Removal R-TSP-EO #1 Control R-TSP-EO #2 Control Purple Crayon 10 10 10 10 Pencil 10 10 10 10 Red Lipstick 6 7 6 7 Ball Point Pen Black 5 5 5 5 Washable Marker Black 7 7 7 7 Sanford Highlighter Yellow 10 10 10 10 Gulden's Mustard 6 6 6 6 Coffee 6 6 5 6 Red Wine 4 5 5 5
Stain Removal R-TSP-EO #1 Control R-TSP-EO #2 Control Purple Crayon 10 10 10 10 Pencil 10 10 10 10 Red Lipstick 6 7 6 7 Ball Point Pen Black 5 5 5 5 Washable Marker Black 7 7 7 7 Sanford Highlighter Yellow 10 10 10 10 Gulden's Mustard 6 6 6 6 Coffee 6 6 5 6 Red Wine 4 5 5 5
[00226]
[00227] Table 19 - stain removal properties of the present invention as compared to a low VOC commercially- available paint formulation (using low Tg Comm. Latex).
Stain Removal R-TSP-EO #1 Comm. Paint R-TSP-EO #2 Comm. Paint Purple Crayon 10 10 10 10 Pencil 10 10 10 10 Red Lipstick 6 7 7 7 Ball Point Pen Black 4 5 5 6 Washable Marker Black 7 7 7 7 Sanford Highlighter Yellow 10 10 10 10 Gulden's Mustard 5 5 5 5 Coffee 6 6 6 6 Red Wine 4 4 4 4
Stain Removal R-TSP-EO #1 Comm. Paint R-TSP-EO #2 Comm. Paint Purple Crayon 10 10 10 10 Pencil 10 10 10 10 Red Lipstick 6 7 7 7 Ball Point Pen Black 4 5 5 6 Washable Marker Black 7 7 7 7 Sanford Highlighter Yellow 10 10 10 10 Gulden's Mustard 5 5 5 5 Coffee 6 6 6 6 Red Wine 4 4 4 4
[00228]
[00229] The following Example 4 and its subsets describe the present invention as surface active alkoxylated compounds utilized as one or more additives to an aqueous dispersion of latex polymer or copolymer.
[00230] Example 4
[00231] Surface active alkoxylated compounds as additives.
[00232] Non-ionic TSP surfactants having ethylene oxide groups greater than about 3 to about 80 was added at 10 lbs/ 100 gals in Pure acrylic - White base, and the formulation exhibited freeze-thaw stability.
[00233] Table 20 shows anionic TSP surfactants of the present invention (10 Ibs/ 100 gals) as F/T additives (in Pure acrylic - White base).
Commercial Table 20 - Freeze-Thaw Stability of Low VOC Paints Semigloss Paint with varying Stormer Viscosity (Krebs Unit, KU) amounts of (anionic) F/T
additive Initial Vis. 1 cycle 2 cycles 3 cycles 4 cycles 5 cycles TSP -EO
phosphate ester 82.9 86.6 88.8 89.4 90.4 91.5 salt Low nonionic TSP 77.8 85.6 87.4 88.0 89.6 91.2 -EO phosphate ester salt TSP -EO TEA salt 81.7 91.0 93.5 94.0 95.5 97.9 TSP-EO
Ammonium 78.0 88.3 90.2 91.6 93.3 101.4 Sulfate Salt TSP -EO 76.6 84.8 85.1 86.2 85.9 86.7 Potassium Salt 1 TSP - EO 81.3 90.7 92.6 93.8 93.3 94.7 Potassium Salt 2 TSP - EO-PO 81.3 92.6 95.3 97.8 102.2 104.9
Commercial Table 20 - Freeze-Thaw Stability of Low VOC Paints Semigloss Paint with varying Stormer Viscosity (Krebs Unit, KU) amounts of (anionic) F/T
additive Initial Vis. 1 cycle 2 cycles 3 cycles 4 cycles 5 cycles TSP -EO
phosphate ester 82.9 86.6 88.8 89.4 90.4 91.5 salt Low nonionic TSP 77.8 85.6 87.4 88.0 89.6 91.2 -EO phosphate ester salt TSP -EO TEA salt 81.7 91.0 93.5 94.0 95.5 97.9 TSP-EO
Ammonium 78.0 88.3 90.2 91.6 93.3 101.4 Sulfate Salt TSP -EO 76.6 84.8 85.1 86.2 85.9 86.7 Potassium Salt 1 TSP - EO 81.3 90.7 92.6 93.8 93.3 94.7 Potassium Salt 2 TSP - EO-PO 81.3 92.6 95.3 97.8 102.2 104.9
[00234] Example 4-1
[00235] Table 21 shows the effects of the TSP ethoxylate of the present invention on the binder particle size. The mean particle size was measured using a Zetasizer Nano ZS device utilizing the Dynamic Light Scattering (DLS) method. The DLS method essentially consists of observing the scattering of laser light from particles, determining the diffusion speed and deriving the size from this scattering of laser light, using the Stokes-Einstein relationship.
Low Table 21 - Effects of TSP Ethoxylate on Particle sizes of voc Low Tg Binder Comm.
TSP Paint Mean Particle Size (nm) (3.0 wt% Initial 1 cycle 2 cycles 3 cycles 4 cycles 5 cycles Vis.
TSP -EO 220.75 142.8 137.5 149.9 154.3 158.8 145.4 A +6.62 TSP -EO 220.75 146.9 161.1 158.3 169.7 164.2 189.0 B +8.28
Low Table 21 - Effects of TSP Ethoxylate on Particle sizes of voc Low Tg Binder Comm.
TSP Paint Mean Particle Size (nm) (3.0 wt% Initial 1 cycle 2 cycles 3 cycles 4 cycles 5 cycles Vis.
TSP -EO 220.75 142.8 137.5 149.9 154.3 158.8 145.4 A +6.62 TSP -EO 220.75 146.9 161.1 158.3 169.7 164.2 189.0 B +8.28
[00236] Example 4-2
[00237] Table 22 shows the loading level of TSP Ethoxylate of the present invention on F/T Stability of low VOC Paints.
TSP-EO
...e22 Loading Level ofTSP EGonFree (wt% Thaw Stability of Low VOC Semigloss Paints based on dry Viscosity (Krebs Units, KU) polymer weight) Initial 1 cycle 2 cycles 3 cycles 4 cycles 5 cycles vis.
0 115.4 Gel -- -- -- --- -- --0.86 114.6 126.3 gel 1.30 101.4 128.7 >140 gel --1.71 110.5 109 113.6 120.2 129.3 gel 2.57 106.6 102.3 103.8 103.8 106.9 109.2 3.43 105.1 102.3 102.6 102.6 103.8 105.8 4.29 104.1 100.9 101.4 101.2 102.3 104.1 8.00 93.2 97.5 98.5 98.8 100.3 101.2
TSP-EO
...e22 Loading Level ofTSP EGonFree (wt% Thaw Stability of Low VOC Semigloss Paints based on dry Viscosity (Krebs Units, KU) polymer weight) Initial 1 cycle 2 cycles 3 cycles 4 cycles 5 cycles vis.
0 115.4 Gel -- -- -- --- -- --0.86 114.6 126.3 gel 1.30 101.4 128.7 >140 gel --1.71 110.5 109 113.6 120.2 129.3 gel 2.57 106.6 102.3 103.8 103.8 106.9 109.2 3.43 105.1 102.3 102.6 102.6 103.8 105.8 4.29 104.1 100.9 101.4 101.2 102.3 104.1 8.00 93.2 97.5 98.5 98.8 100.3 101.2
[00238]
[00239] Referring to Table 23, F/T stability is observed at or above about 1.3% based on the total polymer weight using the TSP-EO of the present invention.
[00240] Table 23 Table 23 - Loading Level of TSP -EO on Freeze-(TSPWt% -EO Thaw Stability of Low VOC Flat Paints based on dry Viscosity (Krebs Units, KU) polymer weight) Initial I cycle 2 cycles 3 cycles 4 cycles 5 cycles vis.
280.5+0.00 104.8 gel -- -- -- --280.5+0.56 102.4 108.6 116.6 122 131.4 136 280.5+1.11 100.4 104.2 108.5 111.8 117.5 120.5 280.5+1.67 98.5 100.1 102.4 104 106.7 109.6 280.5 + 2.22 96 97.2 98.5 99.7 102 104.2 280.5 + 95.5 95.4 96.4 97.3 99.2 100.3 2.78
280.5+0.00 104.8 gel -- -- -- --280.5+0.56 102.4 108.6 116.6 122 131.4 136 280.5+1.11 100.4 104.2 108.5 111.8 117.5 120.5 280.5+1.67 98.5 100.1 102.4 104 106.7 109.6 280.5 + 2.22 96 97.2 98.5 99.7 102 104.2 280.5 + 95.5 95.4 96.4 97.3 99.2 100.3 2.78
[00241] Example 4-3
[00242] TSP ethoxylates in varying amounts were added to low or zero VOC commercial paints and tested for freeze thaw stability. Table 24 shows the effects of TSP-EO of the present invention on F/T Stability of various Low/Zero VOC Commercial Paints. The control contained no TSP ethoxylated surfactant (TSP-EO).
[00243] Table 24 Starting Viscosity Freeze-Thaw Stability Low/Zero VOC Viscosity, (KU) after 1, 2, 3, 4, and 5 cycles Commercial 10.0lbs/100 15.0 Paints Control gals Ibs/100 10.Olbs/100 gals 15.0 Ibs/100 gals Control of added FIT gals of added additive FIT additive Paint 1 130/ >140/ 140.0/ 101.9/116.2/123.1/ 88.3/ 98.3/121.8/
(advertised as 0 112.1 91.2 88.3 139.4/139.2 102.2/ 102.6 103.8/ 100.7 VOC) Paint 2 105.2/106.5/102.9/ 95.6/ 95.7/ 93.8/
(advertised as 109.2 98.5 95 gel/ --100.9/ 100.0 94.3/ 94.4 37g/L) Paint 3 91/107.8/108.0/ 85.9/ 99.8/ 99.9/
(advertised as 102.3 80.8 73.8 gel/ -- 108.6/111.4 99.2/100.0 Paint 4 (advertised as 99.9 97.6 101.1 gel/ -- 123.8/ gel/ - 126.4/ gel/ -Low VOC) Paint 5 106.9/ 89.4/115.2/
(advertised as 41 108.4 86.6 80.8 gel/ -- 120.1/ gel/ - 117.1/ 118.2 g/L) Paint 6 98.6/ 107.6/ 99.4/
VOC) (advertised as 0 111.5 93.7 87.2 gel/ -- gel/ --100.4/ 99.5 Paint 7 (advertised as 0 105.5 87 85 gel/ - 96.5/ 114.5/107.7/ 92.4/ 109.4/ 103.8/
VOC) 106.9/ 107.3 106.2/ 104.9 Paint 8 86.3/ 97.7/ 97.1/ 91.3/ 82.8/ 96.1/ 85.9/
(advertised as 0 102.7 84 79.3 121.1/ gel/ - 92.2 88.0/88.4 VOC) Paint 9 (advertised as 50 119.4 89.8 87.6 gel/ - 126.2/ gel/ - 127.1/ gel/ -/L
Paint 10 93.7/ 93.7/ 92.0/ 94.1/ 87.8/ 93.5/ 86.3/
(advertised as 50 112.5 88.7 83.2 gel/ -- 91.0 86.6/ 86.7 /L
Paint 11 102.2/ 98.4/ 95.0/
(advertised as 50 107.2 91 84.8 gel/ - gel/ - 95.6/94.5 /L
Paint 12 94.4/ 109.4/ 102.0/
(advertised as 50 120.6 95.1 84.3 gel/ -- 114.3/ gel/ -102.5/ 102.5 g/Q
Example 4-5 [00245] Open time - Tables 25 and 26 show the effects of TSP Ethoxylate nonionic surfactants on "open time" of Low VOC Paints and the Effects of TSP
Ethoxylate Anionic Surfactants on "open time" of Low VOC Paints, respectively.
Open time is generally understood to be the interval, after the paint is applied, during which it can be blended with additional painted regions (at the "wet edge").
Open time refers to the amount of time a newly-applied layer of paint remains workable before brush strokes and other signs of manipulation become visible in dried films. The method for measuring Open Time is generally as follows: a 10 mils film is drawn down on a piece of black scrub test paper. The paint film is then cross-hatched in two-inch intervals with the eraser end of a pencil. The first cross hatch then brushed over in one direction 15 times; this is then repeated in two-minute intervals for each successive cross-hatch. After 48 hrs, the dry films are examined for the earliest times at which traces of cross-hatch at discernable.
This is performed under constant humidity, room temp. It is desirable for paint formulations to have an open time of greater than 4 minutes, typically, greater than 6 minutes. The amount of reagent (both nonionic surfactants and anionic surfactants) varied from about 2.5 grams surfactant to about 4.25 grams surfactant per 256 grams of paint.
[00246] Table 25 Reagent starting open time (minutes) (Nonionic viscosity (KU) Surfactants) sample Control TSP - EO #1 89.9 >14 4 TSP - EO #2 85 >14 4 TSP - EO #3 82 14 2 to 4 TSP - EO #4 81.2 >14 4 TSP - EO #5 89.9 4 2 [00247] Table 26 Reagent starting open time (minutes) (Anionic viscosity (KU) Surfactants) sample Control TSP -EO TEA 83.3 14 2 to 4 salt TSP-EO
Ammonium 83.5 8 to 10 2 Sulfate Salt TSP -EO 86.4 8 to 12 2 Potassium Salt 1 TSP - EO-PO 83.5 >14 4 [00248] Referring back to Tables 25 and 26, it is observed that open time increased significantly when utilizing either the non-ionic TSP additives or anionic TSP additives, respectively.
[00249] In the above detailed description, preferred embodiments are described in detail to enable practice of the invention. Although the invention is described with reference to these specific preferred embodiments, it will be understood that the invention is not limited to these preferred embodiments.
But to the contrary, the invention includes numerous alternatives, modifications and equivalents as will become apparent from consideration of the following detailed description. It is understood that upon reading the above description of the present invention, one skilled in the art could make changes and variations therefrom. These changes and variations are included in the spirit and scope of the following appended claims.
(advertised as 0 112.1 91.2 88.3 139.4/139.2 102.2/ 102.6 103.8/ 100.7 VOC) Paint 2 105.2/106.5/102.9/ 95.6/ 95.7/ 93.8/
(advertised as 109.2 98.5 95 gel/ --100.9/ 100.0 94.3/ 94.4 37g/L) Paint 3 91/107.8/108.0/ 85.9/ 99.8/ 99.9/
(advertised as 102.3 80.8 73.8 gel/ -- 108.6/111.4 99.2/100.0 Paint 4 (advertised as 99.9 97.6 101.1 gel/ -- 123.8/ gel/ - 126.4/ gel/ -Low VOC) Paint 5 106.9/ 89.4/115.2/
(advertised as 41 108.4 86.6 80.8 gel/ -- 120.1/ gel/ - 117.1/ 118.2 g/L) Paint 6 98.6/ 107.6/ 99.4/
VOC) (advertised as 0 111.5 93.7 87.2 gel/ -- gel/ --100.4/ 99.5 Paint 7 (advertised as 0 105.5 87 85 gel/ - 96.5/ 114.5/107.7/ 92.4/ 109.4/ 103.8/
VOC) 106.9/ 107.3 106.2/ 104.9 Paint 8 86.3/ 97.7/ 97.1/ 91.3/ 82.8/ 96.1/ 85.9/
(advertised as 0 102.7 84 79.3 121.1/ gel/ - 92.2 88.0/88.4 VOC) Paint 9 (advertised as 50 119.4 89.8 87.6 gel/ - 126.2/ gel/ - 127.1/ gel/ -/L
Paint 10 93.7/ 93.7/ 92.0/ 94.1/ 87.8/ 93.5/ 86.3/
(advertised as 50 112.5 88.7 83.2 gel/ -- 91.0 86.6/ 86.7 /L
Paint 11 102.2/ 98.4/ 95.0/
(advertised as 50 107.2 91 84.8 gel/ - gel/ - 95.6/94.5 /L
Paint 12 94.4/ 109.4/ 102.0/
(advertised as 50 120.6 95.1 84.3 gel/ -- 114.3/ gel/ -102.5/ 102.5 g/Q
Example 4-5 [00245] Open time - Tables 25 and 26 show the effects of TSP Ethoxylate nonionic surfactants on "open time" of Low VOC Paints and the Effects of TSP
Ethoxylate Anionic Surfactants on "open time" of Low VOC Paints, respectively.
Open time is generally understood to be the interval, after the paint is applied, during which it can be blended with additional painted regions (at the "wet edge").
Open time refers to the amount of time a newly-applied layer of paint remains workable before brush strokes and other signs of manipulation become visible in dried films. The method for measuring Open Time is generally as follows: a 10 mils film is drawn down on a piece of black scrub test paper. The paint film is then cross-hatched in two-inch intervals with the eraser end of a pencil. The first cross hatch then brushed over in one direction 15 times; this is then repeated in two-minute intervals for each successive cross-hatch. After 48 hrs, the dry films are examined for the earliest times at which traces of cross-hatch at discernable.
This is performed under constant humidity, room temp. It is desirable for paint formulations to have an open time of greater than 4 minutes, typically, greater than 6 minutes. The amount of reagent (both nonionic surfactants and anionic surfactants) varied from about 2.5 grams surfactant to about 4.25 grams surfactant per 256 grams of paint.
[00246] Table 25 Reagent starting open time (minutes) (Nonionic viscosity (KU) Surfactants) sample Control TSP - EO #1 89.9 >14 4 TSP - EO #2 85 >14 4 TSP - EO #3 82 14 2 to 4 TSP - EO #4 81.2 >14 4 TSP - EO #5 89.9 4 2 [00247] Table 26 Reagent starting open time (minutes) (Anionic viscosity (KU) Surfactants) sample Control TSP -EO TEA 83.3 14 2 to 4 salt TSP-EO
Ammonium 83.5 8 to 10 2 Sulfate Salt TSP -EO 86.4 8 to 12 2 Potassium Salt 1 TSP - EO-PO 83.5 >14 4 [00248] Referring back to Tables 25 and 26, it is observed that open time increased significantly when utilizing either the non-ionic TSP additives or anionic TSP additives, respectively.
[00249] In the above detailed description, preferred embodiments are described in detail to enable practice of the invention. Although the invention is described with reference to these specific preferred embodiments, it will be understood that the invention is not limited to these preferred embodiments.
But to the contrary, the invention includes numerous alternatives, modifications and equivalents as will become apparent from consideration of the following detailed description. It is understood that upon reading the above description of the present invention, one skilled in the art could make changes and variations therefrom. These changes and variations are included in the spirit and scope of the following appended claims.
Claims (70)
1. A latex polymer derived from at least one first monomer and at least one second monomer according to structural formula IA:
wherein R1, R2 and R3 are independently selected from the group consisting of:
butyl, tert-butyl, isobutyl, wherein X is a divalent hydrocarbon radical comprising a linear or branched alkylene radical having from about 2 to 8 carbon atoms; wherein n is an integer of from 1 to 100; wherein R is an ethylenically unsaturated group.
wherein R1, R2 and R3 are independently selected from the group consisting of:
butyl, tert-butyl, isobutyl, wherein X is a divalent hydrocarbon radical comprising a linear or branched alkylene radical having from about 2 to 8 carbon atoms; wherein n is an integer of from 1 to 100; wherein R is an ethylenically unsaturated group.
2. The polymer of claim 1 wherein R is selected from the group consisting of acrylate, C1-C6 alkyl acrylate, allyl, vinyl, maleate, itaconate and fumarate.
3. The polymer according to claim 1 wherein R is selected from at least one member of the group consisting of acrylo, methacrylo, acrylamido, methacrylamido, diallylamino, allyl ether, vinyl ether, a-alkenyl, maleimido, styrenyl, and a-alkyl styrenyl groups.
4. The polymer according to claim 1, wherein R has a chemical structure:
R a CH=C(R b)COO-, wherein if R a is H, then R b is H, C1-C4 alkyl, or -CH2COOX; if R a is -C(O)OX, then R b is H or -CH2C(O)OX a; or if R a is CH3, then R b is H and X a is H
or C1-C4 alkyl.
R a CH=C(R b)COO-, wherein if R a is H, then R b is H, C1-C4 alkyl, or -CH2COOX; if R a is -C(O)OX, then R b is H or -CH2C(O)OX a; or if R a is CH3, then R b is H and X a is H
or C1-C4 alkyl.
5. The polymer according to claim 1 wherein R has a chemical structure: -HC=CYZ or -OCH=CYZ, wherein Y is H, CH3, or Cl; Z is CN, Cl, - COOR c, -C6H4R c, -COOR d, or -HC=CH2; R d is C1-C8 alkyl or C2-C8 hydroxy alkyl; R c is H, Cl, Br, or C1-C4 alkyl.
6. The polymer according to claim 1 wherein the second monomer is according to structural formula IB:
wherein n is in the range of 1-100, and R4 is selected from the group consisting of H, C1-C6 alkyl and C2-C8 hydroxy alkyl.
wherein n is in the range of 1-100, and R4 is selected from the group consisting of H, C1-C6 alkyl and C2-C8 hydroxy alkyl.
7. The polymer according to claim 6 wherein n is an integer of from about 3 to about 80.
8. The polymer according to claim 7 wherein n is an integer of from about 10 to about 50.
9. The polymer according to claim 8 wherein n is an integer of from about 20 to about 50.
10. The polymer according to claim 1 wherein the second monomer is according to structural formula IB-1:
wherein n is in the range of 1-100, and R4 is selected from the group consisting of H, C1-C6 alkyl and C2-C8 hydroxy alkyl.
wherein n is in the range of 1-100, and R4 is selected from the group consisting of H, C1-C6 alkyl and C2-C8 hydroxy alkyl.
11. The polymer according to claim 10 wherein n is an integer of from about 3 to about 80.
12. The polymer according to claim 11 wherein n is an integer of from about to about 50.
13. The polymer according to claim 12 wherein n is an integer of from about to about 50.
14. The polymer according to claim 1 wherein the first monomer comprises at least one acrylic monomer selected from the group consisting of acrylic acid, acrylic acid esters, methacrylic acid, methacrylic acid esters and mixtures thereof.
15. The polymer according to claim 14, wherein the polymer is further derived from at least one third monomer selected from the group consisting of styrene, alpha-methyl styrene, vinyl chloride, acrylonitrile, methacrylonitrile, ureido methacrylate, vinyl acetate, vinyl esters of branched tertiary monocarboxylic acids, itaconic acid, crotonic acid, maleic acid, fumaric acid, ethylene, and conjugated dienes.
16. The polymer of claim 1 wherein the polymer has a glass transition temperature (Tg) of between about -15°C and about 12°C.
17. The polymer of claim 6 wherein the polymer has a glass transition temperature (Tg) of between about -15°C and about 12°C.
18. The polymer of claim 10 wherein the polymer has a glass transition temperature (Tg) of between about -15°C and about 12°C.
19. The polymer of claim 1 wherein the polymer has a glass transition temperature (Tg) of between about -5°C and about 5°C.
20. The polymer of claim 6 wherein the polymer has a glass transition temperature (Tg) of between about -5°C and about 5°C.
21. The polymer of claim 10 wherein the polymer has a glass transition temperature (Tg) of between about -5°C and about 5°C.
22. The polymer of claim 1 wherein the polymer has a glass transition temperature (Tg) of between about -5°C and about 0°C.
23. The polymer of claim 6 wherein the polymer has a glass transition temperature (Tg) of between about -5°C and about 0°C.
24. The polymer of claim 10 wherein the polymer has a glass transition temperature (Tg) of between about -5°C and about 0°C.
25. The polymer of claim 1 wherein the polymer has a mean particle size of less than about 200 nm.
26. The polymer of claim 6 wherein the polymer has a mean particle size of less than about 200 nm.
27. The polymer of claim 10 wherein the polymer has a mean particle size of less than about 200 nm.
28. The polymer of claim 1 wherein the polymer has a mean particle size of less than about 190 nm.
29. The polymer of claim 6 wherein the polymer has a mean particle size of less than about 190 nm.
30. The polymer of claim 10 wherein the polymer has a mean particle size of less than about 190 nm.
31. The polymer of claim 1 wherein the polymer has a mean particle size of less than about 175 nm.
32. The polymer of claim 6 wherein the polymer has a mean particle size of less than about 175 nm.
33. The polymer of claim 10 wherein the polymer has a mean particle size of less than about 175 nm.
34. A latex coating composition comprising:
(a) at least one latex polymer of claim 1; and (b) water, whereby the coating composition is freeze-thaw stable.
(a) at least one latex polymer of claim 1; and (b) water, whereby the coating composition is freeze-thaw stable.
35. A latex coating composition comprising:
(a) at least one latex polymer of claim 6; and (b) water, whereby the coating composition is freeze-thaw stable.
(a) at least one latex polymer of claim 6; and (b) water, whereby the coating composition is freeze-thaw stable.
36. A latex coating composition comprising:
(a) at least one latex polymer of claim 10; and (b) water, whereby the coating composition is freeze-thaw stable.
(a) at least one latex polymer of claim 10; and (b) water, whereby the coating composition is freeze-thaw stable.
37. The latex coating composition of claim 34 further comprising a freeze-thaw additive according to structural formula:
wherein, n is an integer of from 1 to 100, wherein R5 is selected from the group consisting of -OH, -OCH3, -OC2H5, -OC3H7, -OC4H9, -OC5H11, -OC6H13, -Cl, -Br, -CN, Phosphonate (-PO3 M+), Phosphate (PO4 M+), Sulfate (SO4 M+), Sulfonate (SO3 M+), carboxylate (COO- M+), a nonionic group, and a quaternary ammonium ion, wherein M+ is a cation.
wherein, n is an integer of from 1 to 100, wherein R5 is selected from the group consisting of -OH, -OCH3, -OC2H5, -OC3H7, -OC4H9, -OC5H11, -OC6H13, -Cl, -Br, -CN, Phosphonate (-PO3 M+), Phosphate (PO4 M+), Sulfate (SO4 M+), Sulfonate (SO3 M+), carboxylate (COO- M+), a nonionic group, and a quaternary ammonium ion, wherein M+ is a cation.
38. The latex coating composition of claim 37 wherein the freeze-thaw additive is present in an amount greater than about 1.3% by weight of the polymer.
39. The latex coating composition of claim 37 wherein the freeze-thaw additive is present in an amount greater than about 1.6% by weight of the polymer.
40. The latex coating composition of claim 37 wherein the freeze-thaw additive is present in an amount greater than about 2% by weight of the polymer.
41. The latex coating composition of claim 37 wherein the freeze-thaw additive is present in an amount greater than about 4% by weight of the polymer.
42. The latex coating composition of claim 37 wherein the freeze-thaw additive is present in an amount greater than about 7.5% by weight of the polymer.
43. The latex coating composition of claim 37 wherein the freeze-thaw additive is present in an amount greater than about 8% by weight of the polymer.
44. The latex coating composition of claim 37 wherein the freeze-thaw additive is present in an amount greater than about 10% by weight of the polymer.
45. A method of preparing a latex polymer, comprising copolymerizing (1) at least one first monomer with (2) at least one second monomer according to structural formula IA:
wherein R1, R2 and R3 are independently selected from the group consisting of:
butyl, tert-butyl, isobutyl, wherein X is a divalent hydrocarbon radical comprising a linear or branched alkylene radical having from about 2 to 8 carbon atoms; wherein n is an integer of from 1 to 100; wherein R is an ethylenically unsaturated group.
wherein R1, R2 and R3 are independently selected from the group consisting of:
butyl, tert-butyl, isobutyl, wherein X is a divalent hydrocarbon radical comprising a linear or branched alkylene radical having from about 2 to 8 carbon atoms; wherein n is an integer of from 1 to 100; wherein R is an ethylenically unsaturated group.
46. The method of claim 45 wherein the polymer has a glass transition temperature (Tg) of between about -15°C and about 12°C.
47. The method of claim 45 wherein the polymer has a glass transition temperature (Tg) of between about -5°C and about 5°C.
48. The method of claim 45 wherein the polymer has a glass transition temperature (Tg) of between about -5°C and about 0°C.
49. The method of claim 45 wherein the polymer has a mean particle size of less than about 200 nm.
50. The method of claim 45 wherein the polymer has a mean particle size of less than about 190 nm.
51. The method of claim 45 wherein the polymer has a mean particle size of less than about 175 nm.
52. A method of preparing a latex polymer, comprising copolymerizing at least one first monomer with (i) at least one second monomer according to structural formula IB:
or (ii) at least one second monomer according to structural formula IB-1:
wherein n is an integer of from 1 to 100, and R4 is selected from the group consisting of H, C1-C6 alkyl and C2-C8 hydroxy alkyl.
or (ii) at least one second monomer according to structural formula IB-1:
wherein n is an integer of from 1 to 100, and R4 is selected from the group consisting of H, C1-C6 alkyl and C2-C8 hydroxy alkyl.
53. The method of claim 52 wherein the polymer has a glass transition temperature (Tg) of between about -15°C and about 12°C.
54. The method of claim 52 wherein the polymer has a glass transition temperature (Tg) of between about -5°C and about 5°C.
55. The method of claim 52 wherein the polymer has a glass transition temperature (Tg) of between about -5°C and about 0°C.
56. The method of claim 52 wherein the polymer has a mean particle size of less than about 200 nm.
57. The method of claim 52 wherein the polymer has a mean particle size of less than about 190 nm.
58. The method of claim 52 wherein the polymer has a mean particle size of less than about 175 nm.
59. A low VOC latex coating composition comprising:
(a) at least one latex polymer;
(b) at least one pigment;
(c) water; and (d) an additive present in an amount effective to impart freeze-thaw stability to the composition, the additive having structural formula IIA:
wherein R1, R2 and R3 are independently selected from the group consisting of:
butyl, tert-butyl, isobutyl, wherein X is a divalent hydrocarbon radical comprising a linear or branched alkylene radical having from about 2 to 8 carbon atoms; wherein n is an integer of from 1 to 100; wherein R5 is selected from the group consisting of -OH, -OCH3, -OC2H5, -OC3H7, -OC4H9, -OC5H11, -OC6H13, -Cl, -Br, -CN, Phosphonate (-PO3-M+), Phosphate (PO4-M+), Sulfate (SO4-M+), Sulfonate (SO3-M+), carboxylate (COO- M+), a nonionic group, and a quaternary ammonium ion, wherein M+ is a cation.
(a) at least one latex polymer;
(b) at least one pigment;
(c) water; and (d) an additive present in an amount effective to impart freeze-thaw stability to the composition, the additive having structural formula IIA:
wherein R1, R2 and R3 are independently selected from the group consisting of:
butyl, tert-butyl, isobutyl, wherein X is a divalent hydrocarbon radical comprising a linear or branched alkylene radical having from about 2 to 8 carbon atoms; wherein n is an integer of from 1 to 100; wherein R5 is selected from the group consisting of -OH, -OCH3, -OC2H5, -OC3H7, -OC4H9, -OC5H11, -OC6H13, -Cl, -Br, -CN, Phosphonate (-PO3-M+), Phosphate (PO4-M+), Sulfate (SO4-M+), Sulfonate (SO3-M+), carboxylate (COO- M+), a nonionic group, and a quaternary ammonium ion, wherein M+ is a cation.
60. The latex coating composition of claim 59 wherein n is an integer of from about 3 to about 80.
61. The latex coating composition of claim 59 wherein the additive is present in an amount greater than about 1.6% by weight of the polymer and wherein the polymer has a glass transition temperature (Tg) of between about -15°C
and about 12°C.
and about 12°C.
62. The latex coating composition of claim 59 wherein the coating composition is characterized by an open time of greater than about 6 minutes.
63. A low VOC latex coating composition, comprising:
(a) at least one latex polymer;
(b) at least one pigment;
(c) water; and (d) an additive present in an amount effective to impart freeze-thaw stability to the composition, the additive having structural formula:
wherein, n is an integer of from 1 to 100, wherein R5 is selected from the group consisting of -OH, -OCH3, -OC2H5, -OC3H7, -OC5H11, -OC6H13, -OC4H9, -Cl, -Br, -CN, Phosphonate (PO3-M+), Phosphate (PO4-M+), Sulfate (SO4-M+), Sulfonate (SO3-M+), carboxylate (COO- M+), a nonionic group, and a quaternary ammonium ion, wherein M+ is a cation.
(a) at least one latex polymer;
(b) at least one pigment;
(c) water; and (d) an additive present in an amount effective to impart freeze-thaw stability to the composition, the additive having structural formula:
wherein, n is an integer of from 1 to 100, wherein R5 is selected from the group consisting of -OH, -OCH3, -OC2H5, -OC3H7, -OC5H11, -OC6H13, -OC4H9, -Cl, -Br, -CN, Phosphonate (PO3-M+), Phosphate (PO4-M+), Sulfate (SO4-M+), Sulfonate (SO3-M+), carboxylate (COO- M+), a nonionic group, and a quaternary ammonium ion, wherein M+ is a cation.
64. The latex coating composition of claim 63 wherein n is an integer of from about 3 to about 80.
65. The latex coating composition of claim 63 wherein the additive is present in an amount greater than about 1.6% by weight of the polymer.
66. The latex coating composition of claim 63 wherein the polymer has a glass transition temperature (Tg) of between about -15°C and about 12°C, preferably between about -5°C and about 5°C.
67. The latex coating composition of claim 63 wherein the polymer has a mean particle size of less than about 190 nm.
68. The latex coating composition of claim 63 wherein the latex coating composition is characterized by an open time of greater than about 6 minutes.
69. A method for imparting freeze-thaw stability on a low VOC coating composition comprising adding to the composition an effective amount of an additive according to structural formula IIA:
wherein R1, R2 and R3 are independently selected from the group consisting of:
butyl, tert-butyl, isobutyl, wherein X is a divalent hydrocarbon radical comprising a linear or branched alkylene radical having from about 2 to 8 carbon atoms; wherein n is an integer of from 1 to 100; R5 is selected from the group consisting of -OH, -OCH3, -OC2H5, -OC3H7, -OC4H9, -OC5H11, -OC6H13, -Cl, -Br, -CN, Phosphonate (PO3-M+), Phosphate (PO4-M), Sulfate (SO4-M), Sulfonate (SO3-M+), carboxylate (COO- M+), a nonionic group, and a quaternary ammonium ion, wherein M+ is a cation.
wherein R1, R2 and R3 are independently selected from the group consisting of:
butyl, tert-butyl, isobutyl, wherein X is a divalent hydrocarbon radical comprising a linear or branched alkylene radical having from about 2 to 8 carbon atoms; wherein n is an integer of from 1 to 100; R5 is selected from the group consisting of -OH, -OCH3, -OC2H5, -OC3H7, -OC4H9, -OC5H11, -OC6H13, -Cl, -Br, -CN, Phosphonate (PO3-M+), Phosphate (PO4-M), Sulfate (SO4-M), Sulfonate (SO3-M+), carboxylate (COO- M+), a nonionic group, and a quaternary ammonium ion, wherein M+ is a cation.
70. A method for imparting freeze-thaw stability on a low VOC coating composition comprising adding to the composition an effective amount of an additive according to structural formula:
wherein, n is an integer of from 1 to 100, wherein R5 is selected from the group consisting of -OH, -OCH3, -OC2H5, -OC3H7, -OC4H9, -OC5H11, -OC6HI3, -Cl, -Br, -CN, Phosphonate (PO3-M+), Phosphate (PO4-M+), Sulfate (SO4-M'), Sulfonate (SO3-M+), carboxylate (COO- M+), a nonionic group, and a quaternary ammonium ion, wherein M+ is a cation.
wherein, n is an integer of from 1 to 100, wherein R5 is selected from the group consisting of -OH, -OCH3, -OC2H5, -OC3H7, -OC4H9, -OC5H11, -OC6HI3, -Cl, -Br, -CN, Phosphonate (PO3-M+), Phosphate (PO4-M+), Sulfate (SO4-M'), Sulfonate (SO3-M+), carboxylate (COO- M+), a nonionic group, and a quaternary ammonium ion, wherein M+ is a cation.
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